23087889 has 48 divisors (see below), whose sum is σ = 38814720. Its totient is φ = 13543200.

The previous prime is 23087863. The next prime is 23087891. The reversal of 23087889 is 98878032.

It is not a de Polignac number, because 23087889 - 2¹³ = 23079697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23087849) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 120784 + ... + 120974.

It is an arithmetic number, because the mean of its divisors is an integer number (808640).

Almost surely, 2^23087889 is an apocalyptic number.

It is an amenable number.

23087889 is a deficient number, since it is larger than the sum of its proper divisors (15726831).

23087889 is a wasteful number, since it uses less digits than its factorization.

23087889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 242 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 23087889 is about 4804.9858480541. The cubic root of 23087889 is about 284.7484761464.

The spelling of 23087889 in words is "twenty-three million, eighty-seven thousand, eight hundred eighty-nine".