23731672320 has 216 divisors, whose sum is σ = 85680032256. Its totient is φ = 6053228544.

The previous prime is 23731672303. The next prime is 23731672331. The reversal of 23731672320 is 2327613732.

23731672320 is a `hidden beast` number, since 237 + 31 + 6 + 72 + 320 = 666.

It is a super-2 number, since 2×23731672320² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 23 ways as a sum of consecutive naturals, for example, 220177 + ... + 309743.

It is an arithmetic number, because the mean of its divisors is an integer number (396666816).

Almost surely, 2^23731672320 is an apocalyptic number.

23731672320 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 23731672320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42840016128).

23731672320 is an abundant number, since it is smaller than the sum of its proper divisors (61948359936).

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

23731672320 is a wasteful number, since it uses less digits than its factorization.

23731672320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89617 (or 89600 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 36.

The spelling of 23731672320 in words is "twenty-three billion, seven hundred thirty-one million, six hundred seventy-two thousand, three hundred twenty".