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384895680 = 26351330841
BaseRepresentation
bin10110111100010…
…000101011000000
3222211020201121120
4112330100223000
51242013130210
6102105352240
712352362561
oct2674205300
9884221546
10384895680
11188299904
12a8a98680
1361983630
1439192168
1523bcd270
hex16f10ac0

384895680 has 112 divisors (see below), whose sum is σ = 1316089824. Its totient is φ = 94740480.

The previous prime is 384895633. The next prime is 384895681. The reversal of 384895680 is 86598483.

It is not an unprimeable number, because it can be changed into a prime (384895681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2941 + ... + 27900.

It is an arithmetic number, because the mean of its divisors is an integer number (11750802).

Almost surely, 2384895680 is an apocalyptic number.

384895680 is a gapful number since it is divisible by the number (30) 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 384895680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (658044912).

384895680 is an abundant number, since it is smaller than the sum of its proper divisors (931194144).

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

384895680 is a wasteful number, since it uses less digits than its factorization.

384895680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30874 (or 30864 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 51.

The square root of 384895680 is about 19618.7583704984. The cubic root of 384895680 is about 727.4129228214.

The spelling of 384895680 in words is "three hundred eighty-four million, eight hundred ninety-five thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 13 15 16 20 24 26 30 32 39 40 48 52 60 64 65 78 80 96 104 120 130 156 160 192 195 208 240 260 312 320 390 416 480 520 624 780 832 960 1040 1248 1560 2080 2496 3120 4160 6240 12480 30841 61682 92523 123364 154205 185046 246728 308410 370092 400933 462615 493456 616820 740184 801866 925230 986912 1202799 1233640 1480368 1603732 1850460 1973824 2004665 2405598 2467280 2960736 3207464 3700920 4009330 4811196 4934560 5921472 6013995 6414928 7401840 8018660 9622392 9869120 12027990 12829856 14803680 16037320 19244784 24055980 25659712 29607360 32074640 38489568 48111960 64149280 76979136 96223920 128298560 192447840 384895680