23032287 has 18 divisors (see below), whose sum is σ = 34389576. Its totient is φ = 14853960.

The previous prime is 23032279. The next prime is 23032291. The reversal of 23032287 is 78223032.

It is not a de Polignac number, because 23032287 - 2³ = 23032279 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23032287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23032267) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7318 + ... + 9980.

It is an arithmetic number, because the mean of its divisors is an integer number (1910532).

Almost surely, 2^23032287 is an apocalyptic number.

23032287 is a deficient number, since it is larger than the sum of its proper divisors (11357289).

23032287 is a wasteful number, since it uses less digits than its factorization.

23032287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2731 (or 2697 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 23032287 is about 4799.1964952479. The cubic root of 23032287 is about 284.5197081324.

The spelling of 23032287 in words is "twenty-three million, thirty-two thousand, two hundred eighty-seven".