23499872 has 48 divisors (see below), whose sum is σ = 51048144. Its totient is φ = 10560000.

The previous prime is 23499869. The next prime is 23499901. The reversal of 23499872 is 27899432.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35222 + ... + 35882.

It is an arithmetic number, because the mean of its divisors is an integer number (1063503).

Almost surely, 2^23499872 is an apocalyptic number.

23499872 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 23499872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25524072).

23499872 is an abundant number, since it is smaller than the sum of its proper divisors (27548272).

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

23499872 is a wasteful number, since it uses less digits than its factorization.

23499872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783 (or 775 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 23499872 is about 4847.6666552064. Note that the first 4 decimals coincide. The cubic root of 23499872 is about 286.4321957501.

It can be divided in two parts, 2349 and 9872, that added together give a palindrome (12221).

The spelling of 23499872 in words is "twenty-three million, four hundred ninety-nine thousand, eight hundred seventy-two".