23638973 has 8 divisors (see below), whose sum is σ = 24526200. Its totient is φ = 22756608.

The previous prime is 23638969. The next prime is 23638987. The reversal of 23638973 is 37983632.

It can be written as a sum of positive squares in 4 ways, for example, as 11437924 + 12201049 = 3382^2 + 3493^2 .

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 23638973 - 2² = 23638969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23638973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23608973) 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, 10865 + ... + 12857.

It is an arithmetic number, because the mean of its divisors is an integer number (3065775).

Almost surely, 2^23638973 is an apocalyptic number.

It is an amenable number.

23638973 is a deficient number, since it is larger than the sum of its proper divisors (887227).

23638973 is a wasteful number, since it uses less digits than its factorization.

23638973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2431.

The product of its digits is 163296, while the sum is 41.

The square root of 23638973 is about 4861.9926984725. The cubic root of 23638973 is about 286.9962363988.

The spelling of 23638973 in words is "twenty-three million, six hundred thirty-eight thousand, nine hundred seventy-three".