22152404 has 54 divisors (see below), whose sum is σ = 44245530. Its totient is φ = 9690912.

The previous prime is 22152401. The next prime is 22152413. The reversal of 22152404 is 40425122.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19096900 + 3055504 = 4370^2 + 1748^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22152401) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 763862 + ... + 763890.

Almost surely, 2^22152404 is an apocalyptic number.

It is an amenable number.

22152404 is a deficient number, since it is larger than the sum of its proper divisors (22093126).

22152404 is a wasteful number, since it uses less digits than its factorization.

22152404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 22152404 is about 4706.6340414356. The cubic root of 22152404 is about 280.8494780279.

Adding to 22152404 its reverse (40425122), we get a palindrome (62577526).

It can be divided in two parts, 221 and 52404, that added together give a palindrome (52625).

The spelling of 22152404 in words is "twenty-two million, one hundred fifty-two thousand, four hundred four".