22730528 has 24 divisors (see below), whose sum is σ = 44997120. Its totient is φ = 11302720.

The previous prime is 22730507. The next prime is 22730549. The reversal of 22730528 is 82503722.

It is an interprime number because it is at equal distance from previous prime (22730507) and next prime (22730549).

It is a self number, because there is not a number n which added to its sum of digits gives 22730528.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4253 + ... + 7971.

It is an arithmetic number, because the mean of its divisors is an integer number (1874880).

Almost surely, 2^22730528 is an apocalyptic number.

It is an amenable number.

22730528 is a deficient number, since it is larger than the sum of its proper divisors (22266592).

22730528 is a wasteful number, since it uses less digits than its factorization.

22730528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3920 (or 3912 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 22730528 is about 4767.6543498874. The cubic root of 22730528 is about 283.2716907037.

The spelling of 22730528 in words is "twenty-two million, seven hundred thirty thousand, five hundred twenty-eight".