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12902136 = 2331323181
BaseRepresentation
bin110001001101…
…111011111000
3220021111101220
4301031323320
511300332021
61140312040
7214444362
oct61157370
926244356
1012902136
117312625
1243a2620
132899800
1419dbd32
1511eccc6
hexc4def8

12902136 has 48 divisors (see below), whose sum is σ = 34938360. Its totient is φ = 3968640.

The previous prime is 12902117. The next prime is 12902137. The reversal of 12902136 is 63120921.

It is a super-2 number, since 2×129021362 = 332930226724992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12902137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2466 + ... + 5646.

Almost surely, 212902136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12902136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17469180).

12902136 is an abundant number, since it is smaller than the sum of its proper divisors (22036224).

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

12902136 is a wasteful number, since it uses less digits than its factorization.

12902136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3216 (or 3199 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 12902136 is about 3591.9543426942. The cubic root of 12902136 is about 234.5419537202.

The spelling of 12902136 in words is "twelve million, nine hundred two thousand, one hundred thirty-six".

Divisors: 1 2 3 4 6 8 12 13 24 26 39 52 78 104 156 169 312 338 507 676 1014 1352 2028 3181 4056 6362 9543 12724 19086 25448 38172 41353 76344 82706 124059 165412 248118 330824 496236 537589 992472 1075178 1612767 2150356 3225534 4300712 6451068 12902136