22542404 has 6 divisors (see below), whose sum is σ = 39449214. Its totient is φ = 11271200.

The previous prime is 22542397. The next prime is 22542407. The reversal of 22542404 is 40424522.

It can be written as a sum of positive squares in only one way, i.e., 20232004 + 2310400 = 4498^2 + 1520^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22542404.

It is not an unprimeable number, because it can be changed into a prime (22542407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2817797 + ... + 2817804.

It is an arithmetic number, because the mean of its divisors is an integer number (6574869).

Almost surely, 2^22542404 is an apocalyptic number.

It is an amenable number.

22542404 is a deficient number, since it is larger than the sum of its proper divisors (16906810).

22542404 is a wasteful number, since it uses less digits than its factorization.

22542404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5635605 (or 5635603 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 22542404 is about 4747.8841603392. The cubic root of 22542404 is about 282.4880471096.

Adding to 22542404 its reverse (40424522), we get a palindrome (62966926).

The spelling of 22542404 in words is "twenty-two million, five hundred forty-two thousand, four hundred four".