22506648 has 16 divisors (see below), whose sum is σ = 56266680. Its totient is φ = 7502208.

The previous prime is 22506643. The next prime is 22506667. The reversal of 22506648 is 84660522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22506641) 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 3 ways as a sum of consecutive naturals, for example, 468865 + ... + 468912.

Almost surely, 2^22506648 is an apocalyptic number.

It is an amenable number.

22506648 is an abundant number, since it is smaller than the sum of its proper divisors (33760032).

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

22506648 is a wasteful number, since it uses less digits than its factorization.

22506648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937786 (or 937782 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 22506648 is about 4744.1171992268. The cubic root of 22506648 is about 282.3386104042.

The spelling of 22506648 in words is "twenty-two million, five hundred six thousand, six hundred forty-eight".