22712506 has 4 divisors (see below), whose sum is σ = 34068762. Its totient is φ = 11356252.

The previous prime is 22712497. The next prime is 22712507. The reversal of 22712506 is 60521722.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60521722 = 2 ⋅30260861.

It can be written as a sum of positive squares in only one way, i.e., 13256881 + 9455625 = 3641^2 + 3075^2 .

It is not an unprimeable number, because it can be changed into a prime (22712507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5678125 + ... + 5678128.

Almost surely, 2^22712506 is an apocalyptic number.

22712506 is a deficient number, since it is larger than the sum of its proper divisors (11356256).

22712506 is a wasteful number, since it uses less digits than its factorization.

22712506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11356255.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 22712506 is about 4765.7639471547. The cubic root of 22712506 is about 283.1968065037.

The spelling of 22712506 in words is "twenty-two million, seven hundred twelve thousand, five hundred six".