12880540 has 24 divisors (see below), whose sum is σ = 27119232. Its totient is φ = 5138880.

The previous prime is 12880523. The next prime is 12880559. The reversal of 12880540 is 4508821.

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 junction number, because it is equal to n+sod(n) for n = 12880499 and 12880508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11610 + ... + 12670.

It is an arithmetic number, because the mean of its divisors is an integer number (1129968).

Almost surely, 2^12880540 is an apocalyptic number.

12880540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12880540 is an abundant number, since it is smaller than the sum of its proper divisors (14238692).

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

12880540 is a wasteful number, since it uses less digits than its factorization.

12880540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1677 (or 1675 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 12880540 is about 3588.9469207554. The cubic root of 12880540 is about 234.4110194123.

The spelling of 12880540 in words is "twelve million, eight hundred eighty thousand, five hundred forty".