12880621 has 12 divisors (see below), whose sum is σ = 14508508. Its totient is φ = 11366784.

The previous prime is 12880589. The next prime is 12880649. The reversal of 12880621 is 12608821.

12880621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 978121 + 11902500 = 989^2 + 3450^2 .

It is not a de Polignac number, because 12880621 - 2⁵ = 12880589 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12880621.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 5941 + ... + 7813.

Almost surely, 2^12880621 is an apocalyptic number.

It is an amenable number.

12880621 is a deficient number, since it is larger than the sum of its proper divisors (1627887).

12880621 is a wasteful number, since it uses less digits than its factorization.

12880621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1932 (or 1909 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 12880621 is about 3588.9582053850. The cubic root of 12880621 is about 234.4115107802.

The spelling of 12880621 in words is "twelve million, eight hundred eighty thousand, six hundred twenty-one".