628886778000 has 160 divisors (see below), whose sum is σ = 2183495164032. Its totient is φ = 154802880000.

The previous prime is 628886777899. The next prime is 628886778053. The reversal of 628886778000 is 877688826.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3953326 + ... + 4109325.

Almost surely, 2^628886778000 is an apocalyptic number.

628886778000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

628886778000 is an abundant number, since it is smaller than the sum of its proper divisors (1554608386032).

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

628886778000 is a wasteful number, since it uses less digits than its factorization.

628886778000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8062690 (or 8062674 counting only the distinct ones).

The product of its (nonzero) digits is 14450688, while the sum is 60.

The spelling of 628886778000 in words is "six hundred twenty-eight billion, eight hundred eighty-six million, seven hundred seventy-eight thousand".