22974981 has 8 divisors (see below), whose sum is σ = 31002720. Its totient is φ = 15131952.

The previous prime is 22974977. The next prime is 22974997. The reversal of 22974981 is 18947922.

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

It is not a de Polignac number, because 22974981 - 2² = 22974977 is a prime.

It is a super-2 number, since 2×22974981² = 1055699503900722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22974901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45886 + ... + 46383.

It is an arithmetic number, because the mean of its divisors is an integer number (3875340).

Almost surely, 2^22974981 is an apocalyptic number.

22974981 is the 3032-nd centered pentagonal number.

It is an amenable number.

22974981 is a deficient number, since it is larger than the sum of its proper divisors (8027739).

22974981 is an equidigital number, since it uses as much as digits as its factorization.

22974981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92355.

The product of its digits is 72576, while the sum is 42.

The square root of 22974981 is about 4793.2224025180. Note that the first 3 decimals coincide. The cubic root of 22974981 is about 284.2835436049.

The spelling of 22974981 in words is "twenty-two million, nine hundred seventy-four thousand, nine hundred eighty-one".