22540136 has 8 divisors (see below), whose sum is σ = 42262770. Its totient is φ = 11270064.

The previous prime is 22540121. The next prime is 22540153. The reversal of 22540136 is 63104522.

It can be written as a sum of positive squares in only one way, i.e., 17222500 + 5317636 = 4150^2 + 2306^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1408751 + ... + 1408766.

Almost surely, 2^22540136 is an apocalyptic number.

It is an amenable number.

22540136 is a deficient number, since it is larger than the sum of its proper divisors (19722634).

22540136 is a wasteful number, since it uses less digits than its factorization.

22540136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2817523 (or 2817519 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 22540136 is about 4747.6453110990. The cubic root of 22540136 is about 282.4785730479.

Adding to 22540136 its reverse (63104522), we get a palindrome (85644658).

The spelling of 22540136 in words is "twenty-two million, five hundred forty thousand, one hundred thirty-six".