22520690 has 16 divisors (see below), whose sum is σ = 40696128. Its totient is φ = 8972976.

The previous prime is 22520689. The next prime is 22520711. The reversal of 22520690 is 9602522.

It is a super-2 number, since 2×22520690² = 1014362956152200, which contains 22 as substring.

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, 1652 + ... + 6911.

It is an arithmetic number, because the mean of its divisors is an integer number (2543508).

Almost surely, 2^22520690 is an apocalyptic number.

22520690 is a deficient number, since it is larger than the sum of its proper divisors (18175438).

22520690 is a wasteful number, since it uses less digits than its factorization.

22520690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8833.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 22520690 is about 4745.5969066072. The cubic root of 22520690 is about 282.3973156446.

The spelling of 22520690 in words is "twenty-two million, five hundred twenty thousand, six hundred ninety".