5312591280 has 160 divisors (see below), whose sum is σ = 18609523200. Its totient is φ = 1392645888.

The previous prime is 5312591261. The next prime is 5312591309. The reversal of 5312591280 is 821952135.

5312591280 is a `hidden beast` number, since 53 + 12 + 591 + 2 + 8 + 0 = 666.

It is a super-2 number, since 2×5312591280² = 56447252216664076800, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106597 + ... + 148283.

It is an arithmetic number, because the mean of its divisors is an integer number (116309520).

Almost surely, 2^5312591280 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 5312591280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9304761600).

5312591280 is an abundant number, since it is smaller than the sum of its proper divisors (13296931920).

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

5312591280 is a wasteful number, since it uses less digits than its factorization.

5312591280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41768 (or 41756 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 5312591280 is about 72887.5248585106. The cubic root of 5312591280 is about 1744.8930052650.

The spelling of 5312591280 in words is "five billion, three hundred twelve million, five hundred ninety-one thousand, two hundred eighty".