22820866 has 4 divisors (see below), whose sum is σ = 34231302. Its totient is φ = 11410432.

The previous prime is 22820857. The next prime is 22820873. The reversal of 22820866 is 66802822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20657025 + 2163841 = 4545^2 + 1471^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5705215 + ... + 5705218.

Almost surely, 2^22820866 is an apocalyptic number.

22820866 is a deficient number, since it is larger than the sum of its proper divisors (11410436).

22820866 is a wasteful number, since it uses less digits than its factorization.

22820866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11410435.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 22820866 is about 4777.1190062631. The cubic root of 22820866 is about 283.6464638074.

The spelling of 22820866 in words is "twenty-two million, eight hundred twenty thousand, eight hundred sixty-six".