22157432 has 16 divisors (see below), whose sum is σ = 45322200. Its totient is φ = 10071520.

The previous prime is 22157417. The next prime is 22157459. The reversal of 22157432 is 23475122.

It is a congruent number.

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, 125807 + ... + 125982.

Almost surely, 2^22157432 is an apocalyptic number.

22157432 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22157432 is an abundant number, since it is smaller than the sum of its proper divisors (23164768).

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

22157432 is a wasteful number, since it uses less digits than its factorization.

22157432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251806 (or 251802 counting only the distinct ones).

The product of its digits is 3360, while the sum is 26.

The square root of 22157432 is about 4707.1681508100. The cubic root of 22157432 is about 280.8707248468.

The spelling of 22157432 in words is "twenty-two million, one hundred fifty-seven thousand, four hundred thirty-two".