22254920 has 16 divisors (see below), whose sum is σ = 50073660. Its totient is φ = 8901952.

The previous prime is 22254913. The next prime is 22254937. The reversal of 22254920 is 2945222.

It can be written as a sum of positive squares in 2 ways, for example, as 22221796 + 33124 = 4714^2 + 182^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22254920.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278147 + ... + 278226.

Almost surely, 2^22254920 is an apocalyptic number.

22254920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22254920 is an abundant number, since it is smaller than the sum of its proper divisors (27818740).

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

22254920 is a wasteful number, since it uses less digits than its factorization.

22254920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556384 (or 556380 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 22254920 is about 4717.5120561584. The cubic root of 22254920 is about 281.2820460604.

The spelling of 22254920 in words is "twenty-two million, two hundred fifty-four thousand, nine hundred twenty".