22478922 has 12 divisors (see below), whose sum is σ = 48704370. Its totient is φ = 7492968.

The previous prime is 22478899. The next prime is 22478959. The reversal of 22478922 is 22987422.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 21706281 + 772641 = 4659^2 + 879^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 624397 + ... + 624432.

Almost surely, 2^22478922 is an apocalyptic number.

22478922 is an abundant number, since it is smaller than the sum of its proper divisors (26225448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22478922 is a wasteful number, since it uses less digits than its factorization.

22478922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248837 (or 1248834 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 22478922 is about 4741.1941533753. The cubic root of 22478922 is about 282.2226248665. Note that the first 3 decimals are identical.

The spelling of 22478922 in words is "twenty-two million, four hundred seventy-eight thousand, nine hundred twenty-two".