23891973 has 32 divisors (see below), whose sum is σ = 37895424. Its totient is φ = 13105152.

The previous prime is 23891957. The next prime is 23892013. The reversal of 23891973 is 37919832.

It is not a de Polignac number, because 23891973 - 2⁴ = 23891957 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 (23811973) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75211 + ... + 75527.

It is an arithmetic number, because the mean of its divisors is an integer number (1184232).

Almost surely, 2^23891973 is an apocalyptic number.

It is an amenable number.

23891973 is a deficient number, since it is larger than the sum of its proper divisors (14003451).

23891973 is a wasteful number, since it uses less digits than its factorization.

23891973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461.

The product of its digits is 81648, while the sum is 42.

The square root of 23891973 is about 4887.9415913041. The cubic root of 23891973 is about 288.0164800562.

The spelling of 23891973 in words is "twenty-three million, eight hundred ninety-one thousand, nine hundred seventy-three".