22533666 has 16 divisors (see below), whose sum is σ = 46285824. Its totient is φ = 7308144.

The previous prime is 22533659. The next prime is 22533689. The reversal of 22533666 is 66633522.

It is a super-2 number, since 2×22533666² = 1015532206799112, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50530 + ... + 50973.

It is an arithmetic number, because the mean of its divisors is an integer number (2892864).

Almost surely, 2^22533666 is an apocalyptic number.

22533666 is an abundant number, since it is smaller than the sum of its proper divisors (23752158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22533666 is a wasteful number, since it uses less digits than its factorization.

22533666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101545.

The product of its digits is 38880, while the sum is 33.

The square root of 22533666 is about 4746.9638717816. The cubic root of 22533666 is about 282.4515425800.

The spelling of 22533666 in words is "twenty-two million, five hundred thirty-three thousand, six hundred sixty-six".