23331840 has 264 divisors, whose sum is σ = 89609472. Its totient is φ = 5160960.

The previous prime is 23331839. The next prime is 23331851. The reversal of 23331840 is 4813332.

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

It is a self number, because there is not a number n which added to its sum of digits gives 23331840.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 752625 + ... + 752655.

Almost surely, 2^23331840 is an apocalyptic number.

23331840 is a gapful number since it is divisible by the number (20) 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 23331840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44804736).

23331840 is an abundant number, since it is smaller than the sum of its proper divisors (66277632).

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

23331840 is a wasteful number, since it uses less digits than its factorization.

23331840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73 (or 48 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 23331840 is about 4830.3043382379. The cubic root of 23331840 is about 285.7478665292.

The spelling of 23331840 in words is "twenty-three million, three hundred thirty-one thousand, eight hundred forty".