23328287 has 2 divisors, whose sum is σ = 23328288. Its totient is φ = 23328286.

The previous prime is 23328281. The next prime is 23328299. The reversal of 23328287 is 78282332.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23328287 - 2⁴ = 23328271 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23328281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11664143 + 11664144.

It is an arithmetic number, because the mean of its divisors is an integer number (11664144).

Almost surely, 2^23328287 is an apocalyptic number.

23328287 is a deficient number, since it is larger than the sum of its proper divisors (1).

23328287 is an equidigital number, since it uses as much as digits as its factorization.

23328287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 35.

The square root of 23328287 is about 4829.9365420262. The cubic root of 23328287 is about 285.7333611193.

The spelling of 23328287 in words is "twenty-three million, three hundred twenty-eight thousand, two hundred eighty-seven".