22157464 has 32 divisors (see below), whose sum is σ = 49547520. Its totient is φ = 9082656.

The previous prime is 22157461. The next prime is 22157483. The reversal of 22157464 is 46475122.

It is a super-2 number, since 2×22157464² = 981906421822592, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22157461) 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, 7314 + ... + 9889.

It is an arithmetic number, because the mean of its divisors is an integer number (1548360).

Almost surely, 2^22157464 is an apocalyptic number.

It is an amenable number.

22157464 is an abundant number, since it is smaller than the sum of its proper divisors (27390056).

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

22157464 is a wasteful number, since it uses less digits than its factorization.

22157464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17239 (or 17235 counting only the distinct ones).

The product of its digits is 13440, while the sum is 31.

The square root of 22157464 is about 4707.1715498800. The cubic root of 22157464 is about 280.8708600589.

The spelling of 22157464 in words is "twenty-two million, one hundred fifty-seven thousand, four hundred sixty-four".