22715928 has 48 divisors (see below), whose sum is σ = 63192480. Its totient is φ = 7366464.

The previous prime is 22715923. The next prime is 22715933. The reversal of 22715928 is 82951722.

It is an interprime number because it is at equal distance from previous prime (22715923) and next prime (22715933).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 22715892 and 22715901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22715923) 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, 1600 + ... + 6927.

It is an arithmetic number, because the mean of its divisors is an integer number (1316510).

Almost surely, 2^22715928 is an apocalyptic number.

It is an amenable number.

22715928 is an abundant number, since it is smaller than the sum of its proper divisors (40476552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22715928 is a wasteful number, since it uses less digits than its factorization.

22715928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8576 (or 8569 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 22715928 is about 4766.1229526734. The cubic root of 22715928 is about 283.2110284894.

The spelling of 22715928 in words is "twenty-two million, seven hundred fifteen thousand, nine hundred twenty-eight".