22648521 has 16 divisors (see below), whose sum is σ = 34764800. Its totient is φ = 12847248.

The previous prime is 22648519. The next prime is 22648541. The reversal of 22648521 is 12584622.

It is not a de Polignac number, because 22648521 - 2¹ = 22648519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22648541) 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 15 ways as a sum of consecutive naturals, for example, 961 + ... + 6798.

It is an arithmetic number, because the mean of its divisors is an integer number (2172800).

Almost surely, 2^22648521 is an apocalyptic number.

22648521 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22648521 is a deficient number, since it is larger than the sum of its proper divisors (12116279).

22648521 is a wasteful number, since it uses less digits than its factorization.

22648521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7908.

The product of its digits is 7680, while the sum is 30.

The square root of 22648521 is about 4759.0462279747. The cubic root of 22648521 is about 282.9306184929.

The spelling of 22648521 in words is "twenty-two million, six hundred forty-eight thousand, five hundred twenty-one".