23870723856 has 80 divisors (see below), whose sum is σ = 70698105984. Its totient is φ = 6798661632.

The previous prime is 23870723809. The next prime is 23870723867. The reversal of 23870723856 is 65832707832.

It is a happy number.

It is a super-2 number, since 2×23870723856² (a number of 22 digits) contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 23870723799 and 23870723808.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5545 + ... + 218568.

Almost surely, 2^23870723856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23870723856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35349052992).

23870723856 is an abundant number, since it is smaller than the sum of its proper divisors (46827382128).

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

23870723856 is a wasteful number, since it uses less digits than its factorization.

23870723856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224448 (or 224442 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 51.

The spelling of 23870723856 in words is "twenty-three billion, eight hundred seventy million, seven hundred twenty-three thousand, eight hundred fifty-six".