794781520 has 80 divisors (see below), whose sum is σ = 1994872320. Its totient is φ = 292741632.

The previous prime is 794781517. The next prime is 794781521. The reversal of 794781520 is 25187497.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (794781521) 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, 630651 + ... + 631909.

It is an arithmetic number, because the mean of its divisors is an integer number (24935904).

Almost surely, 2^794781520 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 794781520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (997436160).

794781520 is an abundant number, since it is smaller than the sum of its proper divisors (1200090800).

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

794781520 is a wasteful number, since it uses less digits than its factorization.

794781520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1892 (or 1886 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 794781520 is about 28191.8697499829. The cubic root of 794781520 is about 926.2948585736.

The spelling of 794781520 in words is "seven hundred ninety-four million, seven hundred eighty-one thousand, five hundred twenty".