23145987 has 8 divisors (see below), whose sum is σ = 30994704. Its totient is φ = 15363968.

The previous prime is 23145977. The next prime is 23145989. The reversal of 23145987 is 78954132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23145987 - 2⁶ = 23145923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23145989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15858 + ... + 17255.

It is an arithmetic number, because the mean of its divisors is an integer number (3874338).

Almost surely, 2^23145987 is an apocalyptic number.

23145987 is a deficient number, since it is larger than the sum of its proper divisors (7848717).

23145987 is a wasteful number, since it uses less digits than its factorization.

23145987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33349.

The product of its digits is 60480, while the sum is 39.

The square root of 23145987 is about 4811.0276449008. The cubic root of 23145987 is about 284.9871216095.

The spelling of 23145987 in words is "twenty-three million, one hundred forty-five thousand, nine hundred eighty-seven".