28568023057 has 16 divisors (see below), whose sum is σ = 34080076800. Its totient is φ = 23414407632.

The previous prime is 28568023051. The next prime is 28568023063. The reversal of 28568023057 is 75032086582.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28568023051) and next prime (28568023063).

It is not a de Polignac number, because 28568023057 - 2¹⁹ = 28567498769 is a prime.

It is a super-2 number, since 2×28568023057² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28568022998 and 28568023016.

It is not an unprimeable number, because it can be changed into a prime (28568023051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 481194 + ... + 537292.

It is an arithmetic number, because the mean of its divisors is an integer number (2130004800).

Almost surely, 2^28568023057 is an apocalyptic number.

It is an amenable number.

28568023057 is a deficient number, since it is larger than the sum of its proper divisors (5512053743).

28568023057 is a wasteful number, since it uses less digits than its factorization.

28568023057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59292.

The product of its (nonzero) digits is 806400, while the sum is 46.

The spelling of 28568023057 in words is "twenty-eight billion, five hundred sixty-eight million, twenty-three thousand, fifty-seven".