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289950960 = 243513199467
BaseRepresentation
bin10001010010000…
…100110011110000
3202012121000221110
4101102010303300
51043211412320
644434353320
710120354035
oct2122046360
9665530843
10289950960
111397404a2
128112b840
13480bcb20
142a71938c
151a6c65e0
hex11484cf0

289950960 has 160 divisors (see below), whose sum is σ = 974937600. Its totient is φ = 70861824.

The previous prime is 289950953. The next prime is 289950977. The reversal of 289950960 is 69059982.

289950960 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 620647 + ... + 621113.

It is an arithmetic number, because the mean of its divisors is an integer number (6093360).

Almost surely, 2289950960 is an apocalyptic number.

289950960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 289950960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (487468800).

289950960 is an abundant number, since it is smaller than the sum of its proper divisors (684986640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

289950960 is a wasteful number, since it uses less digits than its factorization.

289950960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695 (or 689 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 48.

The square root of 289950960 is about 17027.9464410715. The cubic root of 289950960 is about 661.8732822446.

The spelling of 289950960 in words is "two hundred eighty-nine million, nine hundred fifty thousand, nine hundred sixty".

Divisors: 1 2 3 4 5 6 8 10 12 13 15 16 20 24 26 30 39 40 48 52 60 65 78 80 104 120 130 156 195 199 208 240 260 312 390 398 467 520 597 624 780 796 934 995 1040 1194 1401 1560 1592 1868 1990 2335 2388 2587 2802 2985 3120 3184 3736 3980 4670 4776 5174 5604 5970 6071 7005 7472 7761 7960 9340 9552 10348 11208 11940 12142 12935 14010 15522 15920 18213 18680 20696 22416 23880 24284 25870 28020 30355 31044 36426 37360 38805 41392 47760 48568 51740 56040 60710 62088 72852 77610 91065 92933 97136 103480 112080 121420 124176 145704 155220 182130 185866 206960 242840 278799 291408 310440 364260 371732 464665 485680 557598 620880 728520 743464 929330 1115196 1208129 1393995 1457040 1486928 1858660 2230392 2416258 2787990 3624387 3717320 4460784 4832516 5575980 6040645 7248774 7434640 9665032 11151960 12081290 14497548 18121935 19330064 22303920 24162580 28995096 36243870 48325160 57990192 72487740 96650320 144975480 289950960