22494915 has 40 divisors (see below), whose sum is σ = 40975440. Its totient is φ = 11803968.

The previous prime is 22494907. The next prime is 22494929. The reversal of 22494915 is 51949422.

It is not a de Polignac number, because 22494915 - 2³ = 22494907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22494915.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 26721 + ... + 27549.

It is an arithmetic number, because the mean of its divisors is an integer number (1024386).

Almost surely, 2^22494915 is an apocalyptic number.

22494915 is a deficient number, since it is larger than the sum of its proper divisors (18480525).

22494915 is an equidigital number, since it uses as much as digits as its factorization.

22494915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913 (or 904 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 22494915 is about 4742.8804539014. The cubic root of 22494915 is about 282.2895396477.

It can be divided in two parts, 22494 and 915, that added together give a square (23409 = 153²).

The spelling of 22494915 in words is "twenty-two million, four hundred ninety-four thousand, nine hundred fifteen".