22478372 has 12 divisors (see below), whose sum is σ = 44956800. Its totient is φ = 9633576.

The previous prime is 22478371. The next prime is 22478377. The reversal of 22478372 is 27387422.

22478372 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (22478371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 401372 + ... + 401427.

It is an arithmetic number, because the mean of its divisors is an integer number (3746400).

Almost surely, 2^22478372 is an apocalyptic number.

It is an amenable number.

22478372 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22478372 is a wasteful number, since it uses less digits than its factorization.

22478372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802810 (or 802808 counting only the distinct ones).

The product of its digits is 37632, while the sum is 35.

The square root of 22478372 is about 4741.1361507554. The cubic root of 22478372 is about 282.2203230997.

The spelling of 22478372 in words is "twenty-two million, four hundred seventy-eight thousand, three hundred seventy-two".