22730988 has 48 divisors (see below), whose sum is σ = 60850944. Its totient is φ = 6469440.

The previous prime is 22730977. The next prime is 22731001. The reversal of 22730988 is 88903722.

It is a super-2 number, since 2×22730988² = 1033395630912288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38431 + ... + 39017.

It is an arithmetic number, because the mean of its divisors is an integer number (1267728).

Almost surely, 2^22730988 is an apocalyptic number.

22730988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22730988 is an abundant number, since it is smaller than the sum of its proper divisors (38119956).

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

22730988 is a wasteful number, since it uses less digits than its factorization.

22730988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062 (or 1060 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 22730988 is about 4767.7025913956. The cubic root of 22730988 is about 283.2736015568.

The spelling of 22730988 in words is "twenty-two million, seven hundred thirty thousand, nine hundred eighty-eight".