23917985280 has 240 divisors, whose sum is σ = 94668878304. Its totient is φ = 5466931200.

The previous prime is 23917985249. The next prime is 23917985281. The reversal of 23917985280 is 8258971932.

23917985280 is a `hidden beast` number, since 23 + 9 + 1 + 7 + 98 + 528 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23917985281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87130 + ... + 235430.

Almost surely, 2^23917985280 is an apocalyptic number.

23917985280 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 23917985280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47334439152).

23917985280 is an abundant number, since it is smaller than the sum of its proper divisors (70750893024).

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

23917985280 is a wasteful number, since it uses less digits than its factorization.

23917985280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148337 (or 148318 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 23917985280 in words is "twenty-three billion, nine hundred seventeen million, nine hundred eighty-five thousand, two hundred eighty".