780796940 has 192 divisors, whose sum is σ = 2140121088. Its totient is φ = 232243200.

The previous prime is 780796937. The next prime is 780796999. The reversal of 780796940 is 49697087.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4045484 + ... + 4045676.

It is an arithmetic number, because the mean of its divisors is an integer number (11146464).

Almost surely, 2^780796940 is an apocalyptic number.

780796940 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 780796940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1070060544).

780796940 is an abundant number, since it is smaller than the sum of its proper divisors (1359324148).

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

780796940 is a wasteful number, since it uses less digits than its factorization.

780796940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328 (or 326 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 780796940 is about 27942.7439597474. The cubic root of 780796940 is about 920.8298042538.

The spelling of 780796940 in words is "seven hundred eighty million, seven hundred ninety-six thousand, nine hundred forty".