22331304 has 48 divisors (see below), whose sum is σ = 60758100. Its totient is φ = 7409664.

The previous prime is 22331303. The next prime is 22331333. The reversal of 22331304 is 40313322.

It can be written as a sum of positive squares in 2 ways, for example, as 22071204 + 260100 = 4698^2 + 510^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22331303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18792 + ... + 19944.

Almost surely, 2^22331304 is an apocalyptic number.

22331304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22331304 is an abundant number, since it is smaller than the sum of its proper divisors (38426796).

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

22331304 is a wasteful number, since it uses less digits than its factorization.

22331304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434 (or 1427 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 22331304 is about 4725.6009141695. The cubic root of 22331304 is about 281.6034867961.

Adding to 22331304 its reverse (40313322), we get a palindrome (62644626).

The spelling of 22331304 in words is "twenty-two million, three hundred thirty-one thousand, three hundred four".