12880690 has 16 divisors (see below), whose sum is σ = 24193728. Its totient is φ = 4928176.

The previous prime is 12880657. The next prime is 12880691. The reversal of 12880690 is 9608821.

It is a super-2 number, since 2×12880690² = 331824349752200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12880691) 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, 27772 + ... + 28231.

It is an arithmetic number, because the mean of its divisors is an integer number (1512108).

Almost surely, 2^12880690 is an apocalyptic number.

12880690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12880690 is a deficient number, since it is larger than the sum of its proper divisors (11313038).

12880690 is a wasteful number, since it uses less digits than its factorization.

12880690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56033.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 12880690 is about 3588.9678181895. The cubic root of 12880690 is about 234.4119293513.

The spelling of 12880690 in words is "twelve million, eight hundred eighty thousand, six hundred ninety".