22272528 has 20 divisors (see below), whose sum is σ = 57537488. Its totient is φ = 7424160.

The previous prime is 22272521. The next prime is 22272577. The reversal of 22272528 is 82527222.

It is a junction number, because it is equal to n+sod(n) for n = 22272495 and 22272504.

It is not an unprimeable number, because it can be changed into a prime (22272521) by changing a digit.

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, 231958 + ... + 232053.

Almost surely, 2^22272528 is an apocalyptic number.

It is an amenable number.

22272528 is an abundant number, since it is smaller than the sum of its proper divisors (35264960).

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

22272528 is a wasteful number, since it uses less digits than its factorization.

22272528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464022 (or 464016 counting only the distinct ones).

The product of its digits is 8960, while the sum is 30.

The square root of 22272528 is about 4719.3779251084. The cubic root of 22272528 is about 281.3562095656.

The spelling of 22272528 in words is "twenty-two million, two hundred seventy-two thousand, five hundred twenty-eight".