23387889 has 16 divisors (see below), whose sum is σ = 35731328. Its totient is φ = 13329792.

The previous prime is 23387887. The next prime is 23387899. The reversal of 23387889 is 98878332.

It is not a de Polignac number, because 23387889 - 2¹ = 23387887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23387887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8379 + ... + 10815.

It is an arithmetic number, because the mean of its divisors is an integer number (2233208).

Almost surely, 2^23387889 is an apocalyptic number.

It is an amenable number.

23387889 is a deficient number, since it is larger than the sum of its proper divisors (12343439).

23387889 is a wasteful number, since it uses less digits than its factorization.

23387889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2904.

The product of its digits is 580608, while the sum is 48.

The square root of 23387889 is about 4836.1026664040. The cubic root of 23387889 is about 285.9764965118.

The spelling of 23387889 in words is "twenty-three million, three hundred eighty-seven thousand, eight hundred eighty-nine".