22536648 has 24 divisors (see below), whose sum is σ = 61036950. Its totient is φ = 7512192.

The previous prime is 22536623. The next prime is 22536649. The reversal of 22536648 is 84663522.

22536648 is a `hidden beast` number, since 2 + 2 + 5 + 3 + 6 + 648 = 666.

It can be written as a sum of positive squares in only one way, i.e., 18301284 + 4235364 = 4278^2 + 2058^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22536649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 156433 + ... + 156576.

Almost surely, 2^22536648 is an apocalyptic number.

It is an amenable number.

22536648 is an abundant number, since it is smaller than the sum of its proper divisors (38500302).

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

22536648 is a wasteful number, since it uses less digits than its factorization.

22536648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313021 (or 313014 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 22536648 is about 4747.2779568928. The cubic root of 22536648 is about 282.4640014693.

The spelling of 22536648 in words is "twenty-two million, five hundred thirty-six thousand, six hundred forty-eight".