23990288 has 80 divisors (see below), whose sum is σ = 56663040. Its totient is φ = 9618048.

The previous prime is 23990287. The next prime is 23990297. The reversal of 23990288 is 88209932.

It is not an unprimeable number, because it can be changed into a prime (23990287) 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, 172523 + ... + 172661.

It is an arithmetic number, because the mean of its divisors is an integer number (708288).

Almost surely, 2^23990288 is an apocalyptic number.

23990288 is a gapful number since it is divisible by the number (28) 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 23990288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28331520).

23990288 is an abundant number, since it is smaller than the sum of its proper divisors (32672752).

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

23990288 is a wasteful number, since it uses less digits than its factorization.

23990288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 23990288 is about 4897.9881584177. The cubic root of 23990288 is about 288.4110001235.

The spelling of 23990288 in words is "twenty-three million, nine hundred ninety thousand, two hundred eighty-eight".