22402304 has 18 divisors (see below), whose sum is σ = 44717610. Its totient is φ = 11201024.

The previous prime is 22402301. The next prime is 22402319. The reversal of 22402304 is 40320422.

It can be written as a sum of positive squares in only one way, i.e., 22278400 + 123904 = 4720^2 + 352^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22402301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43499 + ... + 44010.

Almost surely, 2^22402304 is an apocalyptic number.

It is an amenable number.

22402304 is a deficient number, since it is larger than the sum of its proper divisors (22315306).

22402304 is an frugal number, since it uses more digits than its factorization.

22402304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87525 (or 87511 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 22402304 is about 4733.1072246464. The cubic root of 22402304 is about 281.9016138181.

Adding to 22402304 its reverse (40320422), we get a palindrome (62722726).

The spelling of 22402304 in words is "twenty-two million, four hundred two thousand, three hundred four".