22270638 has 16 divisors (see below), whose sum is σ = 47967696. Its totient is φ = 6852480.

The previous prime is 22270627. The next prime is 22270723. The reversal of 22270638 is 83607222.

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, 142683 + ... + 142838.

It is an arithmetic number, because the mean of its divisors is an integer number (2997981).

Almost surely, 2^22270638 is an apocalyptic number.

22270638 is an abundant number, since it is smaller than the sum of its proper divisors (25697058).

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

22270638 is a wasteful number, since it uses less digits than its factorization.

22270638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285539.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 22270638 is about 4719.1776826053. The cubic root of 22270638 is about 281.3482509079.

The spelling of 22270638 in words is "twenty-two million, two hundred seventy thousand, six hundred thirty-eight".