22628866 has 8 divisors (see below), whose sum is σ = 36554364. Its totient is φ = 10444080.

The previous prime is 22628863. The next prime is 22628897. The reversal of 22628866 is 66882622.

It can be written as a sum of positive squares in 2 ways, for example, as 20511841 + 2117025 = 4529^2 + 1455^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (22628861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 435145 + ... + 435196.

Almost surely, 2^22628866 is an apocalyptic number.

22628866 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

22628866 is a deficient number, since it is larger than the sum of its proper divisors (13925498).

22628866 is a wasteful number, since it uses less digits than its factorization.

22628866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870356.

The product of its digits is 110592, while the sum is 40.

The square root of 22628866 is about 4756.9807651493. The cubic root of 22628866 is about 282.8487498542.

It can be divided in two parts, 226 and 28866, that added together give a palindrome (29092).

The spelling of 22628866 in words is "twenty-two million, six hundred twenty-eight thousand, eight hundred sixty-six".