628961076 has 36 divisors (see below), whose sum is σ = 1632846852. Its totient is φ = 203986944.

The previous prime is 628961041. The next prime is 628961083. The reversal of 628961076 is 670169826.

628961076 is a `hidden beast` number, since 6 + 28 + 9 + 610 + 7 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 491508900 + 137452176 = 22170^2 + 11724^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 234765 + ... + 237428.

It is an arithmetic number, because the mean of its divisors is an integer number (45356857).

Almost surely, 2^628961076 is an apocalyptic number.

It is an amenable number.

628961076 is an abundant number, since it is smaller than the sum of its proper divisors (1003885776).

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

628961076 is a wasteful number, since it uses less digits than its factorization.

628961076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472240 (or 472235 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 628961076 is about 25079.0963952053. The cubic root of 628961076 is about 856.7903961816.

The spelling of 628961076 in words is "six hundred twenty-eight million, nine hundred sixty-one thousand, seventy-six".