22254639 has 32 divisors (see below), whose sum is σ = 34214400. Its totient is φ = 12735360.

The previous prime is 22254619. The next prime is 22254667. The reversal of 22254639 is 93645222.

It is not a de Polignac number, because 22254639 - 2⁷ = 22254511 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22254619) 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 31 ways as a sum of consecutive naturals, for example, 82597 + ... + 82865.

It is an arithmetic number, because the mean of its divisors is an integer number (1069200).

Almost surely, 2^22254639 is an apocalyptic number.

22254639 is a deficient number, since it is larger than the sum of its proper divisors (11959761).

22254639 is a wasteful number, since it uses less digits than its factorization.

22254639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415.

The product of its digits is 25920, while the sum is 33.

The square root of 22254639 is about 4717.4822734166. The cubic root of 22254639 is about 281.2808621935.

The spelling of 22254639 in words is "twenty-two million, two hundred fifty-four thousand, six hundred thirty-nine".