22947965 has 4 divisors (see below), whose sum is σ = 27537564. Its totient is φ = 18358368.

The previous prime is 22947959. The next prime is 22947989. The reversal of 22947965 is 56974922.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3118756 + 19829209 = 1766^2 + 4453^2 .

It is a cyclic number.

It is not a de Polignac number, because 22947965 - 2⁶ = 22947901 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2294792 + ... + 2294801.

It is an arithmetic number, because the mean of its divisors is an integer number (6884391).

Almost surely, 2^22947965 is an apocalyptic number.

It is an amenable number.

22947965 is a deficient number, since it is larger than the sum of its proper divisors (4589599).

22947965 is an equidigital number, since it uses as much as digits as its factorization.

22947965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4589598.

The product of its digits is 272160, while the sum is 44.

The square root of 22947965 is about 4790.4034276875. The cubic root of 22947965 is about 284.1720713830.

The spelling of 22947965 in words is "twenty-two million, nine hundred forty-seven thousand, nine hundred sixty-five".