22891866 has 16 divisors (see below), whose sum is σ = 46648224. Its totient is φ = 7486544.

The previous prime is 22891861. The next prime is 22891907. The reversal of 22891866 is 66819822.

It is not an unprimeable number, because it can be changed into a prime (22891861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35676 + ... + 36311.

It is an arithmetic number, because the mean of its divisors is an integer number (2915514).

Almost surely, 2^22891866 is an apocalyptic number.

22891866 is an abundant number, since it is smaller than the sum of its proper divisors (23756358).

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

22891866 is a wasteful number, since it uses less digits than its factorization.

22891866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72045.

The product of its digits is 82944, while the sum is 42.

The square root of 22891866 is about 4784.5444924256. The cubic root of 22891866 is about 283.9403184119.

The spelling of 22891866 in words is "twenty-two million, eight hundred ninety-one thousand, eight hundred sixty-six".