23817972 has 24 divisors (see below), whose sum is σ = 57992256. Its totient is φ = 7594048.

The previous prime is 23817923. The next prime is 23817977. The reversal of 23817972 is 27971832.

It is a self number, because there is not a number n which added to its sum of digits gives 23817972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23817977) 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, 42873 + ... + 43424.

It is an arithmetic number, because the mean of its divisors is an integer number (2416344).

Almost surely, 2^23817972 is an apocalyptic number.

It is an amenable number.

23817972 is an abundant number, since it is smaller than the sum of its proper divisors (34174284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23817972 is a wasteful number, since it uses less digits than its factorization.

23817972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86327 (or 86325 counting only the distinct ones).

The product of its digits is 42336, while the sum is 39.

The square root of 23817972 is about 4880.3659698838. The cubic root of 23817972 is about 287.7188131316.

The spelling of 23817972 in words is "twenty-three million, eight hundred seventeen thousand, nine hundred seventy-two".