28597863 has 8 divisors (see below), whose sum is σ = 43577728. Its totient is φ = 16341624.

The previous prime is 28597853. The next prime is 28597867. The reversal of 28597863 is 36879582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28597863 - 2⁸ = 28597607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28597867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 680881 + ... + 680922.

It is an arithmetic number, because the mean of its divisors is an integer number (5447216).

Almost surely, 2^28597863 is an apocalyptic number.

28597863 is a deficient number, since it is larger than the sum of its proper divisors (14979865).

28597863 is a wasteful number, since it uses less digits than its factorization.

28597863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361813.

The product of its digits is 725760, while the sum is 48.

The square root of 28597863 is about 5347.6969809442. The cubic root of 28597863 is about 305.8049613633.

The spelling of 28597863 in words is "twenty-eight million, five hundred ninety-seven thousand, eight hundred sixty-three".