22531966 has 16 divisors (see below), whose sum is σ = 34529040. Its totient is φ = 11024640.

The previous prime is 22531963. The next prime is 22531969. The reversal of 22531966 is 66913522.

It is an interprime number because it is at equal distance from previous prime (22531963) and next prime (22531969).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22531963) 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, 23790 + ... + 24718.

It is an arithmetic number, because the mean of its divisors is an integer number (2158065).

Almost surely, 2^22531966 is an apocalyptic number.

22531966 is a deficient number, since it is larger than the sum of its proper divisors (11997074).

22531966 is a wasteful number, since it uses less digits than its factorization.

22531966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179.

The product of its digits is 19440, while the sum is 34.

The square root of 22531966 is about 4746.7848065822. The cubic root of 22531966 is about 282.4444394349. Note that the first 4 decimals are identical.

The spelling of 22531966 in words is "twenty-two million, five hundred thirty-one thousand, nine hundred sixty-six".