22620628 has 6 divisors (see below), whose sum is σ = 39586106. Its totient is φ = 11310312.

The previous prime is 22620613. The next prime is 22620629. The reversal of 22620628 is 82602622.

It can be written as a sum of positive squares in only one way, i.e., 12873744 + 9746884 = 3588^2 + 3122^2 .

It is a super-2 number, since 2×22620628² = 1023385622228768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22620596 and 22620605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22620629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2827575 + ... + 2827582.

Almost surely, 2^22620628 is an apocalyptic number.

It is an amenable number.

22620628 is a deficient number, since it is larger than the sum of its proper divisors (16965478).

22620628 is a wasteful number, since it uses less digits than its factorization.

22620628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5655161 (or 5655159 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 22620628 is about 4756.1148009694. The cubic root of 22620628 is about 282.8144221535.

The spelling of 22620628 in words is "twenty-two million, six hundred twenty thousand, six hundred twenty-eight".