22913215 has 8 divisors (see below), whose sum is σ = 29611008. Its totient is φ = 16920480.

The previous prime is 22913207. The next prime is 22913227. The reversal of 22913215 is 51231922.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22913215 - 2³ = 22913207 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22913215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176191 + ... + 176320.

It is an arithmetic number, because the mean of its divisors is an integer number (3701376).

Almost surely, 2^22913215 is an apocalyptic number.

22913215 is a deficient number, since it is larger than the sum of its proper divisors (6697793).

22913215 is a wasteful number, since it uses less digits than its factorization.

22913215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352529.

The product of its digits is 1080, while the sum is 25.

The square root of 22913215 is about 4786.7750103802. The cubic root of 22913215 is about 284.0285587560.

The spelling of 22913215 in words is "twenty-two million, nine hundred thirteen thousand, two hundred fifteen".