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12838560 = 253573821
BaseRepresentation
bin110000111110…
…011010100000
3220011021012020
4300332122200
511241313220
61135101440
7214061130
oct60763240
926137166
1012838560
117279889
124371880
1328768a7
1419c2ac0
1511d9040
hexc3e6a0

12838560 has 96 divisors (see below), whose sum is σ = 46230912. Its totient is φ = 2933760.

The previous prime is 12838559. The next prime is 12838571. The reversal of 12838560 is 6583821.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

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 15 ways as a sum of consecutive naturals, for example, 1450 + ... + 5270.

It is an arithmetic number, because the mean of its divisors is an integer number (481572).

Almost surely, 212838560 is an apocalyptic number.

12838560 is a gapful number since it is divisible by the number (10) 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 12838560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23115456).

12838560 is an abundant number, since it is smaller than the sum of its proper divisors (33392352).

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

12838560 is a wasteful number, since it uses less digits than its factorization.

12838560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3846 (or 3838 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 12838560 is about 3583.0936353939. The cubic root of 12838560 is about 234.1560796678.

The spelling of 12838560 in words is "twelve million, eight hundred thirty-eight thousand, five hundred sixty".

Divisors: 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 32 35 40 42 48 56 60 70 80 84 96 105 112 120 140 160 168 210 224 240 280 336 420 480 560 672 840 1120 1680 3360 3821 7642 11463 15284 19105 22926 26747 30568 38210 45852 53494 57315 61136 76420 80241 91704 106988 114630 122272 133735 152840 160482 183408 213976 229260 267470 305680 320964 366816 401205 427952 458520 534940 611360 641928 802410 855904 917040 1069880 1283856 1604820 1834080 2139760 2567712 3209640 4279520 6419280 12838560