28565793 has 12 divisors (see below), whose sum is σ = 43056000. Its totient is φ = 18215736.

The previous prime is 28565791. The next prime is 28565809. The reversal of 28565793 is 39756582.

It is a happy number.

28565793 is a `hidden beast` number, since 28 + 56 + 579 + 3 = 666.

It is not a de Polignac number, because 28565793 - 2¹ = 28565791 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28565791) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68793 + ... + 69206.

It is an arithmetic number, because the mean of its divisors is an integer number (3588000).

Almost surely, 2^28565793 is an apocalyptic number.

28565793 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

28565793 is a deficient number, since it is larger than the sum of its proper divisors (14490207).

28565793 is a wasteful number, since it uses less digits than its factorization.

28565793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138028 (or 138025 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 28565793 is about 5344.6976528144. The cubic root of 28565793 is about 305.6906074416.

It can be divided in two parts, 2856579 and 3, that added together give a palindrome (2856582).

The spelling of 28565793 in words is "twenty-eight million, five hundred sixty-five thousand, seven hundred ninety-three".