22505536 has 21 divisors (see below), whose sum is σ = 44734861. Its totient is φ = 11233792.

The previous prime is 22505521. The next prime is 22505551. The reversal of 22505536 is 63550522.

22505536 = T₃₈₅ + T₃₈₆ + ... + T₅₇₆.

The square root of 22505536 is 4744.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (22505521) and next prime (22505551).

It can be written as a sum of positive squares in only one way, i.e., 13838400 + 8667136 = 3720^2 + 2944^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 37656 + ... + 38248.

Almost surely, 2^22505536 is an apocalyptic number.

22505536 is the 4744-th square number.

It is an amenable number.

22505536 is a deficient number, since it is larger than the sum of its proper divisors (22229325).

22505536 is an frugal number, since it uses more digits than its factorization.

22505536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198 (or 595 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 28.

The cubic root of 22505536 is about 282.3339604343. Note that the first 3 decimals are identical.

The spelling of 22505536 in words is "twenty-two million, five hundred five thousand, five hundred thirty-six".