23089287 has 12 divisors (see below), whose sum is σ = 33336744. Its totient is φ = 14208480.

The previous prime is 23089219. The next prime is 23089289. The reversal of 23089287 is 78298032.

It is not a de Polignac number, because 23089287 - 2⁷ = 23089159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23089289) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22264 + ... + 23277.

It is an arithmetic number, because the mean of its divisors is an integer number (2778062).

Almost surely, 2^23089287 is an apocalyptic number.

23089287 is a deficient number, since it is larger than the sum of its proper divisors (10247457).

23089287 is a wasteful number, since it uses less digits than its factorization.

23089287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45570 (or 45557 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 23089287 is about 4805.1313197456. The cubic root of 23089287 is about 284.7542233203.

The spelling of 23089287 in words is "twenty-three million, eighty-nine thousand, two hundred eighty-seven".