12904887 has 16 divisors (see below), whose sum is σ = 18455040. Its totient is φ = 7992192.

The previous prime is 12904883. The next prime is 12904901. The reversal of 12904887 is 78840921.

It is not a de Polignac number, because 12904887 - 2² = 12904883 is a prime.

It is a super-2 number, since 2×12904887² = 333072216965538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12904883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2428 + ... + 5630.

It is an arithmetic number, because the mean of its divisors is an integer number (1153440).

Almost surely, 2^12904887 is an apocalyptic number.

12904887 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12904887 is a deficient number, since it is larger than the sum of its proper divisors (5550153).

12904887 is a wasteful number, since it uses less digits than its factorization.

12904887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3302.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 12904887 is about 3592.3372614497. The cubic root of 12904887 is about 234.5586222538.

The spelling of 12904887 in words is "twelve million, nine hundred four thousand, eight hundred eighty-seven".