23880640 has 84 divisors (see below), whose sum is σ = 66193416. Its totient is φ = 8182272.

The previous prime is 23880613. The next prime is 23880667. The reversal of 23880640 is 4608832.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (23880613) and next prime (23880667).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14919 + ... + 16441.

Almost surely, 2^23880640 is an apocalyptic number.

23880640 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 23880640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33096708).

23880640 is an abundant number, since it is smaller than the sum of its proper divisors (42312776).

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

23880640 is a wasteful number, since it uses less digits than its factorization.

23880640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1554 (or 1537 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 23880640 is about 4886.7821723502. The cubic root of 23880640 is about 287.9709332805.

The spelling of 23880640 in words is "twenty-three million, eight hundred eighty thousand, six hundred forty".