780996128 has 48 divisors (see below), whose sum is σ = 1709055936. Its totient is φ = 348291840.

The previous prime is 780996127. The next prime is 780996149. The reversal of 780996128 is 821699087.

It is not an unprimeable number, because it can be changed into a prime (780996127) 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, 2276 + ... + 39587.

It is an arithmetic number, because the mean of its divisors is an integer number (35605332).

Almost surely, 2^780996128 is an apocalyptic number.

It is an amenable number.

780996128 is an abundant number, since it is smaller than the sum of its proper divisors (928059808).

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

780996128 is a wasteful number, since it uses less digits than its factorization.

780996128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41937 (or 41929 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 50.

The square root of 780996128 is about 27946.3079493517. The cubic root of 780996128 is about 920.9081014579.

The spelling of 780996128 in words is "seven hundred eighty million, nine hundred ninety-six thousand, one hundred twenty-eight".