22531464 has 24 divisors (see below), whose sum is σ = 61022910. Its totient is φ = 7510464.

The previous prime is 22531433. The next prime is 22531489. The reversal of 22531464 is 46413522.

It can be written as a sum of positive squares in only one way, i.e., 17994564 + 4536900 = 4242^2 + 2130^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 156397 + ... + 156540.

Almost surely, 2^22531464 is an apocalyptic number.

22531464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22531464 is an abundant number, since it is smaller than the sum of its proper divisors (38491446).

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

22531464 is a wasteful number, since it uses less digits than its factorization.

22531464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312949 (or 312942 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 22531464 is about 4746.7319283903. The cubic root of 22531464 is about 282.4423418496.

Adding to 22531464 its reverse (46413522), we get a palindrome (68944986).

The spelling of 22531464 in words is "twenty-two million, five hundred thirty-one thousand, four hundred sixty-four".