22499664 has 80 divisors (see below), whose sum is σ = 64948224. Its totient is φ = 6652800.

The previous prime is 22499657. The next prime is 22499683. The reversal of 22499664 is 46699422.

It is a super-2 number, since 2×22499664² = 1012469760225792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22209 + ... + 23199.

Almost surely, 2^22499664 is an apocalyptic number.

22499664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22499664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32474112).

22499664 is an abundant number, since it is smaller than the sum of its proper divisors (42448560).

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

22499664 is a wasteful number, since it uses less digits than its factorization.

22499664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056 (or 1050 counting only the distinct ones).

The product of its digits is 186624, while the sum is 42.

The square root of 22499664 is about 4743.3810726105. The cubic root of 22499664 is about 282.3094033768.

The spelling of 22499664 in words is "twenty-two million, four hundred ninety-nine thousand, six hundred sixty-four".