22510228 has 24 divisors (see below), whose sum is σ = 42632352. Its totient is φ = 10338144.

The previous prime is 22510223. The next prime is 22510249. The reversal of 22510228 is 82201522.

It is a super-2 number, since 2×22510228² = 1013420729223968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22510199 and 22510208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22510223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10851 + ... + 12757.

It is an arithmetic number, because the mean of its divisors is an integer number (1776348).

Almost surely, 2^22510228 is an apocalyptic number.

It is an amenable number.

22510228 is a deficient number, since it is larger than the sum of its proper divisors (20122124).

22510228 is a wasteful number, since it uses less digits than its factorization.

22510228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2151 (or 2149 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 22510228 is about 4744.4944936210. The cubic root of 22510228 is about 282.3535795907.

The spelling of 22510228 in words is "twenty-two million, five hundred ten thousand, two hundred twenty-eight".