23287975 has 24 divisors (see below), whose sum is σ = 30156800. Its totient is φ = 17820000.

The previous prime is 23287969. The next prime is 23287987. The reversal of 23287975 is 57978232.

It is not a de Polignac number, because 23287975 - 2¹⁵ = 23255207 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116926 + ... + 117124.

Almost surely, 2^23287975 is an apocalyptic number.

23287975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

23287975 is a deficient number, since it is larger than the sum of its proper divisors (6868825).

23287975 is a wasteful number, since it uses less digits than its factorization.

23287975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391 (or 386 counting only the distinct ones).

The product of its digits is 211680, while the sum is 43.

The square root of 23287975 is about 4825.7615979242. The cubic root of 23287975 is about 285.5686808694.

The spelling of 23287975 in words is "twenty-three million, two hundred eighty-seven thousand, nine hundred seventy-five".