22732990 has 16 divisors (see below), whose sum is σ = 46765152. Its totient is φ = 7794144.

The previous prime is 22732981. The next prime is 22732999. The reversal of 22732990 is 9923722.

It is an interprime number because it is at equal distance from previous prime (22732981) and next prime (22732999).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22732999) 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, 162309 + ... + 162448.

It is an arithmetic number, because the mean of its divisors is an integer number (2922822).

Almost surely, 2^22732990 is an apocalyptic number.

22732990 is an abundant number, since it is smaller than the sum of its proper divisors (24032162).

22732990 is a wasteful number, since it uses less digits than its factorization.

22732990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324771.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 22732990 is about 4767.9125411442. The cubic root of 22732990 is about 283.2819176215.

The spelling of 22732990 in words is "twenty-two million, seven hundred thirty-two thousand, nine hundred ninety".