22987957 has 4 divisors (see below), whose sum is σ = 23729536. Its totient is φ = 22246380.

The previous prime is 22987949. The next prime is 22987963. The reversal of 22987957 is 75978922.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22987957 - 2³ = 22987949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22987957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22987997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370743 + ... + 370804.

It is an arithmetic number, because the mean of its divisors is an integer number (5932384).

Almost surely, 2^22987957 is an apocalyptic number.

It is an amenable number.

22987957 is a deficient number, since it is larger than the sum of its proper divisors (741579).

22987957 is an equidigital number, since it uses as much as digits as its factorization.

22987957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741578.

The product of its digits is 635040, while the sum is 49.

The square root of 22987957 is about 4794.5757893686. The cubic root of 22987957 is about 284.3370535367.

The spelling of 22987957 in words is "twenty-two million, nine hundred eighty-seven thousand, nine hundred fifty-seven".