22536905 has 4 divisors (see below), whose sum is σ = 27044292. Its totient is φ = 18029520.

The previous prime is 22536893. The next prime is 22536929. The reversal of 22536905 is 50963522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5031049 + 17505856 = 2243^2 + 4184^2 .

It is not a de Polignac number, because 22536905 - 2⁴ = 22536889 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2253686 + ... + 2253695.

It is an arithmetic number, because the mean of its divisors is an integer number (6761073).

Almost surely, 2^22536905 is an apocalyptic number.

It is an amenable number.

22536905 is a deficient number, since it is larger than the sum of its proper divisors (4507387).

22536905 is an equidigital number, since it uses as much as digits as its factorization.

22536905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4507386.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 22536905 is about 4747.3050249589. The cubic root of 22536905 is about 282.4650751719.

The spelling of 22536905 in words is "twenty-two million, five hundred thirty-six thousand, nine hundred five".