28597113 has 6 divisors (see below), whose sum is σ = 41306954. Its totient is φ = 19064736.

The previous prime is 28597099. The next prime is 28597139. The reversal of 28597113 is 31179582.

It can be written as a sum of positive squares in only one way, i.e., 24324624 + 4272489 = 4932^2 + 2067^2 .

It is not a de Polignac number, because 28597113 - 2⁵ = 28597081 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28597813) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1588720 + ... + 1588737.

Almost surely, 2^28597113 is an apocalyptic number.

It is an amenable number.

28597113 is a deficient number, since it is larger than the sum of its proper divisors (12709841).

28597113 is a wasteful number, since it uses less digits than its factorization.

28597113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3177463 (or 3177460 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 28597113 is about 5347.6268568403. The cubic root of 28597113 is about 305.8022880199.

The spelling of 28597113 in words is "twenty-eight million, five hundred ninety-seven thousand, one hundred thirteen".