23928861 has 16 divisors (see below), whose sum is σ = 34890048. Its totient is φ = 14467200.

The previous prime is 23928859. The next prime is 23928887. The reversal of 23928861 is 16882932.

It is a happy number.

It is not a de Polignac number, because 23928861 - 2¹ = 23928859 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23928361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21265 + ... + 22361.

It is an arithmetic number, because the mean of its divisors is an integer number (2180628).

Almost surely, 2^23928861 is an apocalyptic number.

It is an amenable number.

23928861 is a deficient number, since it is larger than the sum of its proper divisors (10961187).

23928861 is a wasteful number, since it uses less digits than its factorization.

23928861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772.

The product of its digits is 41472, while the sum is 39.

The square root of 23928861 is about 4891.7135034669. The cubic root of 23928861 is about 288.1646314706.

The spelling of 23928861 in words is "twenty-three million, nine hundred twenty-eight thousand, eight hundred sixty-one".