22551980 has 36 divisors (see below), whose sum is σ = 52061520. Its totient is φ = 8199840.

The previous prime is 22551961. The next prime is 22552037. The reversal of 22551980 is 8915522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2240 + ... + 7079.

Almost surely, 2^22551980 is an apocalyptic number.

22551980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22551980 is an abundant number, since it is smaller than the sum of its proper divisors (29509540).

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

22551980 is a wasteful number, since it uses less digits than its factorization.

22551980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9350 (or 9337 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 22551980 is about 4748.8925024683. The cubic root of 22551980 is about 282.5280416991.

The spelling of 22551980 in words is "twenty-two million, five hundred fifty-one thousand, nine hundred eighty".