22506456 has 32 divisors (see below), whose sum is σ = 64304640. Its totient is φ = 6430368.

The previous prime is 22506437. The next prime is 22506479. The reversal of 22506456 is 65460522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66816 + ... + 67151.

It is an arithmetic number, because the mean of its divisors is an integer number (2009520).

Almost surely, 2^22506456 is an apocalyptic number.

It is an amenable number.

22506456 is an abundant number, since it is smaller than the sum of its proper divisors (41798184).

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

22506456 is a wasteful number, since it uses less digits than its factorization.

22506456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133983 (or 133979 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 22506456 is about 4744.0969635959. The cubic root of 22506456 is about 282.3378075426.

Adding to 22506456 its reverse (65460522), we get a palindrome (87966978).

The spelling of 22506456 in words is "twenty-two million, five hundred six thousand, four hundred fifty-six".