22961587 has 8 divisors (see below), whose sum is σ = 25367040. Its totient is φ = 20609160.

The previous prime is 22961581. The next prime is 22961593. The reversal of 22961587 is 78516922.

It is an interprime number because it is at equal distance from previous prime (22961581) and next prime (22961593).

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

It is not a de Polignac number, because 22961587 - 2³ = 22961579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22961581) 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, 12343 + ... + 14080.

It is an arithmetic number, because the mean of its divisors is an integer number (3170880).

Almost surely, 2^22961587 is an apocalyptic number.

22961587 is a deficient number, since it is larger than the sum of its proper divisors (2405453).

22961587 is a wasteful number, since it uses less digits than its factorization.

22961587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26513.

The product of its digits is 60480, while the sum is 40.

The square root of 22961587 is about 4791.8250176733. The cubic root of 22961587 is about 284.2282888046.

It can be divided in two parts, 2296 and 1587, that added together give a palindrome (3883).

The spelling of 22961587 in words is "twenty-two million, nine hundred sixty-one thousand, five hundred eighty-seven".