22479890 has 16 divisors (see below), whose sum is σ = 41451480. Its totient is φ = 8772480.

The previous prime is 22479883. The next prime is 22479893. The reversal of 22479890 is 9897422.

It can be written as a sum of positive squares in 4 ways, for example, as 8334769 + 14145121 = 2887^2 + 3761^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (22479893) 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, 27005 + ... + 27824.

Almost surely, 2^22479890 is an apocalyptic number.

22479890 is a deficient number, since it is larger than the sum of its proper divisors (18971590).

22479890 is a wasteful number, since it uses less digits than its factorization.

22479890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54877.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 22479890 is about 4741.2962362628. The cubic root of 22479890 is about 282.2266758849.

The spelling of 22479890 in words is "twenty-two million, four hundred seventy-nine thousand, eight hundred ninety".