791333280 has 384 divisors, whose sum is σ = 3019161600. Its totient is φ = 192844800.

The previous prime is 791333273. The next prime is 791333281. The reversal of 791333280 is 82333197.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (791333281) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2544325 + ... + 2544635.

It is an arithmetic number, because the mean of its divisors is an integer number (7862400).

Almost surely, 2^791333280 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 791333280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1509580800).

791333280 is an abundant number, since it is smaller than the sum of its proper divisors (2227828320).

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

791333280 is a wasteful number, since it uses less digits than its factorization.

791333280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385 (or 371 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 791333280 is about 28130.6466331650. The cubic root of 791333280 is about 924.9533085757.

The spelling of 791333280 in words is "seven hundred ninety-one million, three hundred thirty-three thousand, two hundred eighty".