13028872 has 16 divisors (see below), whose sum is σ = 24528060. Its totient is φ = 6488064.

The previous prime is 13028863. The next prime is 13028881. The reversal of 13028872 is 27882031.

It is an interprime number because it is at equal distance from previous prime (13028863) and next prime (13028881).

It can be written as a sum of positive squares in 2 ways, for example, as 12208036 + 820836 = 3494^2 + 906^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1113 + ... + 5224.

Almost surely, 2^13028872 is an apocalyptic number.

It is an amenable number.

13028872 is a deficient number, since it is larger than the sum of its proper divisors (11499188).

13028872 is a wasteful number, since it uses less digits than its factorization.

13028872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6600 (or 6596 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 13028872 is about 3609.5528808981. The cubic root of 13028872 is about 235.3074111803.

The spelling of 13028872 in words is "thirteen million, twenty-eight thousand, eight hundred seventy-two".