791847720 has 48 divisors (see below), whose sum is σ = 2573506260. Its totient is φ = 211159296.

The previous prime is 791847691. The next prime is 791847733. The reversal of 791847720 is 27748197.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 765407556 + 26440164 = 27666^2 + 5142^2 .

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 11 ways as a sum of consecutive naturals, for example, 1099429 + ... + 1100148.

Almost surely, 2^791847720 is an apocalyptic number.

It is an amenable number.

791847720 is an abundant number, since it is smaller than the sum of its proper divisors (1781658540).

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

791847720 is a wasteful number, since it uses less digits than its factorization.

791847720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199594 (or 2199587 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 45.

The square root of 791847720 is about 28139.7889117882. The cubic root of 791847720 is about 925.1537002933.

The spelling of 791847720 in words is "seven hundred ninety-one million, eight hundred forty-seven thousand, seven hundred twenty".