23978328 has 96 divisors (see below), whose sum is σ = 68947200. Its totient is φ = 6930880.

The previous prime is 23978327. The next prime is 23978329. The reversal of 23978328 is 82387932.

It is an interprime number because it is at equal distance from previous prime (23978327) and next prime (23978329).

It is a self number, because there is not a number n which added to its sum of digits gives 23978328.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23978327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66613 + ... + 66971.

It is an arithmetic number, because the mean of its divisors is an integer number (718200).

Almost surely, 2^23978328 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 23978328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34473600).

23978328 is an abundant number, since it is smaller than the sum of its proper divisors (44968872).

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

23978328 is a wasteful number, since it uses less digits than its factorization.

23978328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413 (or 398 counting only the distinct ones).

The product of its digits is 145152, while the sum is 42.

The square root of 23978328 is about 4896.7670967691. The cubic root of 23978328 is about 288.3630644904.

The spelling of 23978328 in words is "twenty-three million, nine hundred seventy-eight thousand, three hundred twenty-eight".