22238645 has 32 divisors (see below), whose sum is σ = 33022080. Its totient is φ = 14135040.

The previous prime is 22238639. The next prime is 22238663. The reversal of 22238645 is 54683222.

It is not a de Polignac number, because 22238645 - 2⁶ = 22238581 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12767 + ... + 14403.

It is an arithmetic number, because the mean of its divisors is an integer number (1031940).

Almost surely, 2^22238645 is an apocalyptic number.

It is an amenable number.

22238645 is a deficient number, since it is larger than the sum of its proper divisors (10783435).

22238645 is a wasteful number, since it uses less digits than its factorization.

22238645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1685.

The product of its digits is 23040, while the sum is 32.

The square root of 22238645 is about 4715.7867848324. The cubic root of 22238645 is about 281.2134622494.

The spelling of 22238645 in words is "twenty-two million, two hundred thirty-eight thousand, six hundred forty-five".