22479457 has 32 divisors (see below), whose sum is σ = 31981824. Its totient is φ = 15206400.

The previous prime is 22479449. The next prime is 22479463. The reversal of 22479457 is 75497422.

It is not a de Polignac number, because 22479457 - 2³ = 22479449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22479427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16357 + ... + 17677.

It is an arithmetic number, because the mean of its divisors is an integer number (999432).

Almost surely, 2^22479457 is an apocalyptic number.

It is an amenable number.

22479457 is a deficient number, since it is larger than the sum of its proper divisors (9502367).

22479457 is a wasteful number, since it uses less digits than its factorization.

22479457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369.

The product of its digits is 141120, while the sum is 40.

The square root of 22479457 is about 4741.2505734247. The cubic root of 22479457 is about 282.2248638219.

The spelling of 22479457 in words is "twenty-two million, four hundred seventy-nine thousand, four hundred fifty-seven".