22497880 has 32 divisors (see below), whose sum is σ = 51483600. Its totient is φ = 8845696.

The previous prime is 22497869. The next prime is 22497899. The reversal of 22497880 is 8879422.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2407 + ... + 7126.

Almost surely, 2^22497880 is an apocalyptic number.

22497880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22497880 is an abundant number, since it is smaller than the sum of its proper divisors (28985720).

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

22497880 is a wasteful number, since it uses less digits than its factorization.

22497880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9603 (or 9599 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 22497880 is about 4743.1930173671. The cubic root of 22497880 is about 282.3019417352.

The spelling of 22497880 in words is "twenty-two million, four hundred ninety-seven thousand, eight hundred eighty".