23272539840 has 672 divisors, whose sum is σ = 91503276480. Its totient is φ = 5563514880.

The previous prime is 23272539839. The next prime is 23272539853. The reversal of 23272539840 is 4893527232.

23272539840 is a `hidden beast` number, since 2 + 3 + 2 + 72 + 539 + 8 + 40 = 666.

It is a super-2 number, since 2×23272539840² (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 an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 118134622 + ... + 118134818.

It is an arithmetic number, because the mean of its divisors is an integer number (136165590).

Almost surely, 2^23272539840 is an apocalyptic number.

23272539840 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 23272539840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45751638240).

23272539840 is an abundant number, since it is smaller than the sum of its proper divisors (68230736640).

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

23272539840 is a wasteful number, since it uses less digits than its factorization.

23272539840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358 (or 331 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 23272539840 in words is "twenty-three billion, two hundred seventy-two million, five hundred thirty-nine thousand, eight hundred forty".