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13092138 = 233242447
BaseRepresentation
bin110001111100…
…010100101010
3220122011001000
4301330110222
511322422023
61144335430
7216165333
oct61742452
926564030
1013092138
117432354
124474576
132935137
141a4b28a
151239243
hexc7c52a

13092138 has 16 divisors (see below), whose sum is σ = 29093760. Its totient is φ = 4364028.

The previous prime is 13092127. The next prime is 13092139. The reversal of 13092138 is 83129031.

13092138 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×130921382 = 342808154822088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (13092139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121170 + ... + 121277.

It is an arithmetic number, because the mean of its divisors is an integer number (1818360).

Almost surely, 213092138 is an apocalyptic number.

13092138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13092138 is an abundant number, since it is smaller than the sum of its proper divisors (16001622).

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

13092138 is a wasteful number, since it uses less digits than its factorization.

13092138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242458 (or 242452 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 13092138 is about 3618.3059572126. The cubic root of 13092138 is about 235.6876673602.

The spelling of 13092138 in words is "thirteen million, ninety-two thousand, one hundred thirty-eight".

Divisors: 1 2 3 6 9 18 27 54 242447 484894 727341 1454682 2182023 4364046 6546069 13092138