23221986 has 16 divisors (see below), whose sum is σ = 46522944. Its totient is φ = 7727504.

The previous prime is 23221981. The next prime is 23221993. The reversal of 23221986 is 68912232.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (23221981) 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, 955 + ... + 6881.

It is an arithmetic number, because the mean of its divisors is an integer number (2907684).

Almost surely, 2^23221986 is an apocalyptic number.

23221986 is an abundant number, since it is smaller than the sum of its proper divisors (23300958).

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

23221986 is a wasteful number, since it uses less digits than its factorization.

23221986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6585.

The product of its digits is 10368, while the sum is 33.

The square root of 23221986 is about 4818.9195884555. The cubic root of 23221986 is about 285.2986957668.

The spelling of 23221986 in words is "twenty-three million, two hundred twenty-one thousand, nine hundred eighty-six".