780005328 has 40 divisors (see below), whose sum is σ = 2121069600. Its totient is φ = 246317184.

The previous prime is 780005327. The next prime is 780005389. The reversal of 780005328 is 823500087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780005321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 426723 + ... + 428546.

It is an arithmetic number, because the mean of its divisors is an integer number (53026740).

Almost surely, 2^780005328 is an apocalyptic number.

It is an amenable number.

780005328 is an abundant number, since it is smaller than the sum of its proper divisors (1341064272).

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

780005328 is a wasteful number, since it uses less digits than its factorization.

780005328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855299 (or 855293 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 780005328 is about 27928.5754738762. The cubic root of 780005328 is about 920.5185041919.

The spelling of 780005328 in words is "seven hundred eighty million, five thousand, three hundred twenty-eight".