12880528 has 10 divisors (see below), whose sum is σ = 24956054. Its totient is φ = 6440256.

The previous prime is 12880523. The next prime is 12880559. The reversal of 12880528 is 82508821.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10942864 + 1937664 = 3308^2 + 1392^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12880493 and 12880502.

It is not an unprimeable number, because it can be changed into a prime (12880523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402501 + ... + 402532.

Almost surely, 2^12880528 is an apocalyptic number.

It is an amenable number.

12880528 is a deficient number, since it is larger than the sum of its proper divisors (12075526).

12880528 is an equidigital number, since it uses as much as digits as its factorization.

12880528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805041 (or 805035 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 34.

The square root of 12880528 is about 3588.9452489555. The cubic root of 12880528 is about 234.4109466169.

It can be divided in two parts, 128 and 80528, that added together give a square (80656 = 284²).

The spelling of 12880528 in words is "twelve million, eight hundred eighty thousand, five hundred twenty-eight".