780578628 has 12 divisors (see below), whose sum is σ = 1821350160. Its totient is φ = 260192872.

The previous prime is 780578611. The next prime is 780578629. The reversal of 780578628 is 826875087.

780578628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (780578629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32524098 + ... + 32524121.

It is an arithmetic number, because the mean of its divisors is an integer number (151779180).

Almost surely, 2^780578628 is an apocalyptic number.

It is an amenable number.

780578628 is an abundant number, since it is smaller than the sum of its proper divisors (1040771532).

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

780578628 is a wasteful number, since it uses less digits than its factorization.

780578628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65048226 (or 65048224 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 51.

The square root of 780578628 is about 27938.8372700082. The cubic root of 780578628 is about 920.7439744541.

The spelling of 780578628 in words is "seven hundred eighty million, five hundred seventy-eight thousand, six hundred twenty-eight".