23907972 has 48 divisors (see below), whose sum is σ = 61737984. Its totient is φ = 7140000.

The previous prime is 23907941. The next prime is 23907979. The reversal of 23907972 is 27970932.

It is a super-2 number, since 2×23907972² = 1143182250305568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23907972.

It is not an unprimeable number, because it can be changed into a prime (23907979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8097 + ... + 10647.

It is an arithmetic number, because the mean of its divisors is an integer number (1286208).

Almost surely, 2^23907972 is an apocalyptic number.

23907972 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23907972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30868992).

23907972 is an abundant number, since it is smaller than the sum of its proper divisors (37830012).

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

23907972 is a wasteful number, since it uses less digits than its factorization.

23907972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2640 (or 2638 counting only the distinct ones).

The product of its (nonzero) digits is 47628, while the sum is 39.

The square root of 23907972 is about 4889.5778958924. The cubic root of 23907972 is about 288.0807547464.

The spelling of 23907972 in words is "twenty-three million, nine hundred seven thousand, nine hundred seventy-two".