22478112 has 36 divisors (see below), whose sum is σ = 63922950. Its totient is φ = 7492608.

The previous prime is 22478077. The next prime is 22478119. The reversal of 22478112 is 21187422.

It can be written as a sum of positive squares in only one way, i.e., 21123216 + 1354896 = 4596^2 + 1164^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (22478119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38737 + ... + 39312.

Almost surely, 2^22478112 is an apocalyptic number.

It is an amenable number.

22478112 is an abundant number, since it is smaller than the sum of its proper divisors (41444838).

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

22478112 is a wasteful number, since it uses less digits than its factorization.

22478112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78065 (or 78054 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 22478112 is about 4741.1087310881. The cubic root of 22478112 is about 282.2192349787.

The spelling of 22478112 in words is "twenty-two million, four hundred seventy-eight thousand, one hundred twelve".