23928973 has 12 divisors (see below), whose sum is σ = 25485460. Its totient is φ = 22450176.

The previous prime is 23928967. The next prime is 23928991. The reversal of 23928973 is 37982932.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 917764 + 23011209 = 958^2 + 4797^2 .

It is a de Polignac number, because none of the positive numbers 2^k-23928973 is a prime.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

Its product of digits (163296) is a multiple of the sum of its prime factors (864).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23928913) 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 11 ways as a sum of consecutive naturals, for example, 30733 + ... + 31501.

Almost surely, 2^23928973 is an apocalyptic number.

It is an amenable number.

23928973 is a deficient number, since it is larger than the sum of its proper divisors (1556487).

23928973 is an equidigital number, since it uses as much as digits as its factorization.

23928973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864 (or 835 counting only the distinct ones).

The product of its digits is 163296, while the sum is 43.

The square root of 23928973 is about 4891.7249513847. The cubic root of 23928973 is about 288.1650810586.

The spelling of 23928973 in words is "twenty-three million, nine hundred twenty-eight thousand, nine hundred seventy-three".