23501328 has 80 divisors (see below), whose sum is σ = 64966080. Its totient is φ = 7299072.

The previous prime is 23501297. The next prime is 23501333. The reversal of 23501328 is 82310532.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 23501298 and 23501307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66400 + ... + 66752.

It is an arithmetic number, because the mean of its divisors is an integer number (812076).

Almost surely, 2^23501328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23501328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32483040).

23501328 is an abundant number, since it is smaller than the sum of its proper divisors (41464752).

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

23501328 is a wasteful number, since it uses less digits than its factorization.

23501328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456 (or 450 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 23501328 is about 4847.8168282228. The cubic root of 23501328 is about 286.4381111960.

The spelling of 23501328 in words is "twenty-three million, five hundred one thousand, three hundred twenty-eight".