23304778560 has 672 divisors, whose sum is σ = 95160998400. Its totient is φ = 5123948544.

The previous prime is 23304778513. The next prime is 23304778571. The reversal of 23304778560 is 6587740332.

It is a tau number, because it is divible by the number of its divisors (672).

It is a super-2 number, since 2×23304778560² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 117109341 + ... + 117109539.

Almost surely, 2^23304778560 is an apocalyptic number.

23304778560 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 23304778560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47580499200).

23304778560 is an abundant number, since it is smaller than the sum of its proper divisors (71856219840).

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

23304778560 is a wasteful number, since it uses less digits than its factorization.

23304778560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423 (or 410 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 45.

The spelling of 23304778560 in words is "twenty-three billion, three hundred four million, seven hundred seventy-eight thousand, five hundred sixty".