22154404 has 12 divisors (see below), whose sum is σ = 38830428. Its totient is φ = 11060000.

The previous prime is 22154401. The next prime is 22154413. The reversal of 22154404 is 40445122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17305600 + 4848804 = 4160^2 + 2202^2 .

It is not an unprimeable number, because it can be changed into a prime (22154401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1147 + ... + 6754.

It is an arithmetic number, because the mean of its divisors is an integer number (3235869).

Almost surely, 2^22154404 is an apocalyptic number.

It is an amenable number.

22154404 is a deficient number, since it is larger than the sum of its proper divisors (16676024).

22154404 is a wasteful number, since it uses less digits than its factorization.

22154404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8606 (or 8604 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 22154404 is about 4706.8465027022. The cubic root of 22154404 is about 280.8579298126.

Adding to 22154404 its reverse (40445122), we get a palindrome (62599526).

The spelling of 22154404 in words is "twenty-two million, one hundred fifty-four thousand, four hundred four".