23639973 has 8 divisors (see below), whose sum is σ = 36022848. Its totient is φ = 13508544.

The previous prime is 23639969. The next prime is 23639999. The reversal of 23639973 is 37993632.

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

It is not a de Polignac number, because 23639973 - 2² = 23639969 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23639923) 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, 562836 + ... + 562877.

It is an arithmetic number, because the mean of its divisors is an integer number (4502856).

Almost surely, 2^23639973 is an apocalyptic number.

It is an amenable number.

23639973 is a deficient number, since it is larger than the sum of its proper divisors (12382875).

23639973 is a wasteful number, since it uses less digits than its factorization.

23639973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125723.

The product of its digits is 183708, while the sum is 42.

The square root of 23639973 is about 4862.0955358775. The cubic root of 23639973 is about 287.0002832778. Note that the first 3 decimals are identical.

The spelling of 23639973 in words is "twenty-three million, six hundred thirty-nine thousand, nine hundred seventy-three".