22394664 has 64 divisors (see below), whose sum is σ = 62640000. Its totient is φ = 7413120.

The previous prime is 22394633. The next prime is 22394717. The reversal of 22394664 is 46649322.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

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 15 ways as a sum of consecutive naturals, for example, 42724 + ... + 43244.

It is an arithmetic number, because the mean of its divisors is an integer number (978750).

Almost surely, 2^22394664 is an apocalyptic number.

22394664 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 22394664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31320000).

22394664 is an abundant number, since it is smaller than the sum of its proper divisors (40245336).

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

22394664 is a wasteful number, since it uses less digits than its factorization.

22394664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735 (or 725 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 22394664 is about 4732.3000750164. The cubic root of 22394664 is about 281.8695639419.

It can be divided in two parts, 2239 and 4664, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 22394664 in words is "twenty-two million, three hundred ninety-four thousand, six hundred sixty-four".