23105889 has 6 divisors (see below), whose sum is σ = 33375186. Its totient is φ = 15403920.

The previous prime is 23105879. The next prime is 23105893. The reversal of 23105889 is 98850132.

It can be written as a sum of positive squares in only one way, i.e., 16136289 + 6969600 = 4017^2 + 2640^2 .

It is not a de Polignac number, because 23105889 - 2¹⁵ = 23073121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23105879) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1283652 + ... + 1283669.

It is an arithmetic number, because the mean of its divisors is an integer number (5562531).

Almost surely, 2^23105889 is an apocalyptic number.

It is an amenable number.

23105889 is a deficient number, since it is larger than the sum of its proper divisors (10269297).

23105889 is a wasteful number, since it uses less digits than its factorization.

23105889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2567327 (or 2567324 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 23105889 is about 4806.8585375482. The cubic root of 23105889 is about 284.8224563640.

The spelling of 23105889 in words is "twenty-three million, one hundred five thousand, eight hundred eighty-nine".