780506928 has 200 divisors, whose sum is σ = 2462156400. Its totient is φ = 237758976.

The previous prime is 780506921. The next prime is 780506953. The reversal of 780506928 is 829605087.

It is not an unprimeable number, because it can be changed into a prime (780506921) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 713550 + ... + 714642.

It is an arithmetic number, because the mean of its divisors is an integer number (12310782).

Almost surely, 2^780506928 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 780506928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1231078200).

780506928 is an abundant number, since it is smaller than the sum of its proper divisors (1681649472).

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

780506928 is a wasteful number, since it uses less digits than its factorization.

780506928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161 (or 1146 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 780506928 is about 27937.5540804846. The cubic root of 780506928 is about 920.7157819645.

The spelling of 780506928 in words is "seven hundred eighty million, five hundred six thousand, nine hundred twenty-eight".