12957885 has 24 divisors (see below), whose sum is σ = 22588800. Its totient is φ = 6871392.

The previous prime is 12957869. The next prime is 12957911. The reversal of 12957885 is 58875921.

It is a happy number.

It is not a de Polignac number, because 12957885 - 2⁴ = 12957869 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 12957885.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8232 + ... + 9678.

It is an arithmetic number, because the mean of its divisors is an integer number (941200).

Almost surely, 2^12957885 is an apocalyptic number.

12957885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12957885 is a deficient number, since it is larger than the sum of its proper divisors (9630915).

12957885 is a wasteful number, since it uses less digits than its factorization.

12957885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1657 (or 1654 counting only the distinct ones).

The product of its digits is 201600, while the sum is 45.

The square root of 12957885 is about 3599.7062380144. The cubic root of 12957885 is about 234.8792800820.

It can be divided in two parts, 1295 and 7885, that added together give a triangular number (9180 = T₁₃₅).

The spelling of 12957885 in words is "twelve million, nine hundred fifty-seven thousand, eight hundred eighty-five".