22272458 has 16 divisors (see below), whose sum is σ = 36072960. Its totient is φ = 10252656.

The previous prime is 22272457. The next prime is 22272473. The reversal of 22272458 is 85427222.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22272451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11783 + ... + 13541.

It is an arithmetic number, because the mean of its divisors is an integer number (2254560).

Almost surely, 2^22272458 is an apocalyptic number.

22272458 is a deficient number, since it is larger than the sum of its proper divisors (13800502).

22272458 is a wasteful number, since it uses less digits than its factorization.

22272458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2261.

The product of its digits is 17920, while the sum is 32.

The square root of 22272458 is about 4719.3705088709. The cubic root of 22272458 is about 281.3559148085.

The spelling of 22272458 in words is "twenty-two million, two hundred seventy-two thousand, four hundred fifty-eight".