22401408 has 32 divisors (see below), whose sum is σ = 59504760. Its totient is φ = 7467008.

The previous prime is 22401397. The next prime is 22401433. The reversal of 22401408 is 80410422.

It is a tau number, because it is divible by the number of its divisors (32).

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, 28785 + ... + 29552.

Almost surely, 2^22401408 is an apocalyptic number.

It is an amenable number.

22401408 is an abundant number, since it is smaller than the sum of its proper divisors (37103352).

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

22401408 is an equidigital number, since it uses as much as digits as its factorization.

22401408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58354 (or 58342 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 22401408 is about 4733.0125712911. The cubic root of 22401408 is about 281.8978554664.

The spelling of 22401408 in words is "twenty-two million, four hundred one thousand, four hundred eight".