22506732 has 18 divisors (see below), whose sum is σ = 56892108. Its totient is φ = 7502232.

The previous prime is 22506727. The next prime is 22506733. The reversal of 22506732 is 23760522.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 22506696 and 22506705.

It is not an unprimeable number, because it can be changed into a prime (22506733) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 312558 + ... + 312629.

Almost surely, 2^22506732 is an apocalyptic number.

It is an amenable number.

22506732 is an abundant number, since it is smaller than the sum of its proper divisors (34385376).

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

22506732 is a wasteful number, since it uses less digits than its factorization.

22506732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625197 (or 625192 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 22506732 is about 4744.1260522882. The cubic root of 22506732 is about 282.3389616547.

The spelling of 22506732 in words is "twenty-two million, five hundred six thousand, seven hundred thirty-two".