23749872 has 20 divisors (see below), whose sum is σ = 61353960. Its totient is φ = 7916608.

The previous prime is 23749807. The next prime is 23749877. The reversal of 23749872 is 27894732.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23749877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247347 + ... + 247442.

It is an arithmetic number, because the mean of its divisors is an integer number (3067698).

Almost surely, 2^23749872 is an apocalyptic number.

It is an amenable number.

23749872 is an abundant number, since it is smaller than the sum of its proper divisors (37604088).

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

23749872 is a wasteful number, since it uses less digits than its factorization.

23749872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494800 (or 494794 counting only the distinct ones).

The product of its digits is 169344, while the sum is 42.

The square root of 23749872 is about 4873.3840398639. The cubic root of 23749872 is about 287.4443375542. Note that the first 3 decimals are identical.

It can be divided in two parts, 2374 and 9872, that added together give a triangular number (12246 = T₁₅₆).

The spelling of 23749872 in words is "twenty-three million, seven hundred forty-nine thousand, eight hundred seventy-two".