12905136 has 40 divisors (see below), whose sum is σ = 37043760. Its totient is φ = 4301568.

The previous prime is 12905131. The next prime is 12905141. The reversal of 12905136 is 63150921.

It is an interprime number because it is at equal distance from previous prime (12905131) and next prime (12905141).

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 (12905131) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 14505 + ... + 15368.

It is an arithmetic number, because the mean of its divisors is an integer number (926094).

Almost surely, 2^12905136 is an apocalyptic number.

12905136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12905136 is an abundant number, since it is smaller than the sum of its proper divisors (24138624).

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

12905136 is a wasteful number, since it uses less digits than its factorization.

12905136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29890 (or 29878 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 12905136 is about 3592.3719183848. The cubic root of 12905136 is about 234.5601308482.

It can be divided in two parts, 12905 and 136, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 12905136 in words is "twelve million, nine hundred five thousand, one hundred thirty-six".