791838720 has 256 divisors, whose sum is σ = 2831112000. Its totient is φ = 209977344.

The previous prime is 791838703. The next prime is 791838721. The reversal of 791838720 is 27838197.

It is a tau number, because it is divible by the number of its divisors (256).

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

It is not an unprimeable number, because it can be changed into a prime (791838721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4423591 + ... + 4423769.

Almost surely, 2^791838720 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 791838720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1415556000).

791838720 is an abundant number, since it is smaller than the sum of its proper divisors (2039273280).

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

791838720 is an equidigital number, since it uses as much as digits as its factorization.

791838720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 791838720 is about 28139.6289954221. The cubic root of 791838720 is about 925.1501952360.

The spelling of 791838720 in words is "seven hundred ninety-one million, eight hundred thirty-eight thousand, seven hundred twenty".