22642087 has 4 divisors (see below), whose sum is σ = 24383800. Its totient is φ = 20900376.

The previous prime is 22642063. The next prime is 22642141. The reversal of 22642087 is 78024622.

22642087 = T₁₀₅₈ + T₁₀₅₉ + ... + T₁₀₉₆.

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

It is a cyclic number.

It is not a de Polignac number, because 22642087 - 2²³ = 14253479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22642687) 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, 870837 + ... + 870862.

It is an arithmetic number, because the mean of its divisors is an integer number (6095950).

Almost surely, 2^22642087 is an apocalyptic number.

22642087 is a deficient number, since it is larger than the sum of its proper divisors (1741713).

22642087 is a wasteful number, since it uses less digits than its factorization.

22642087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1741712.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 22642087 is about 4758.3702041771. The cubic root of 22642087 is about 282.9038242781.

The spelling of 22642087 in words is "twenty-two million, six hundred forty-two thousand, eighty-seven".