5811840720 has 240 divisors, whose sum is σ = 23133102720. Its totient is φ = 1328389632.

The previous prime is 5811840719. The next prime is 5811840731. The reversal of 5811840720 is 270481185.

5811840720 is a `hidden beast` number, since 581 + 1 + 8 + 4 + 0 + 72 + 0 = 666.

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

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 polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 114726 + ... + 157434.

It is an arithmetic number, because the mean of its divisors is an integer number (96387928).

Almost surely, 2^5811840720 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 5811840720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11566551360).

5811840720 is an abundant number, since it is smaller than the sum of its proper divisors (17321262000).

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

5811840720 is a wasteful number, since it uses less digits than its factorization.

5811840720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42744 (or 42726 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The square root of 5811840720 is about 76235.4295587032. The cubic root of 5811840720 is about 1797.9236056914.

The spelling of 5811840720 in words is "five billion, eight hundred eleven million, eight hundred forty thousand, seven hundred twenty".