22052904 has 32 divisors (see below), whose sum is σ = 56912640. Its totient is φ = 7113600.

The previous prime is 22052897. The next prime is 22052909. The reversal of 22052904 is 40925022.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (22052909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14077 + ... + 15564.

It is an arithmetic number, because the mean of its divisors is an integer number (1778520).

Almost surely, 2^22052904 is an apocalyptic number.

22052904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22052904 is an abundant number, since it is smaller than the sum of its proper divisors (34859736).

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

22052904 is a wasteful number, since it uses less digits than its factorization.

22052904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29681 (or 29677 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 22052904 is about 4696.0519588267. The cubic root of 22052904 is about 280.4283579479.

Adding to 22052904 its reverse (40925022), we get a palindrome (62977926).

The spelling of 22052904 in words is "twenty-two million, fifty-two thousand, nine hundred four".