628961552 has 20 divisors (see below), whose sum is σ = 1221891660. Its totient is φ = 313634688.

The previous prime is 628961551. The next prime is 628961603. The reversal of 628961552 is 255169826.

It can be written as a sum of positive squares in 2 ways, for example, as 435306496 + 193655056 = 20864^2 + 13916^2 .

It is not an unprimeable number, because it can be changed into a prime (628961551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46727 + ... + 58662.

It is an arithmetic number, because the mean of its divisors is an integer number (61094583).

Almost surely, 2^628961552 is an apocalyptic number.

It is an amenable number.

628961552 is a deficient number, since it is larger than the sum of its proper divisors (592930108).

628961552 is a wasteful number, since it uses less digits than its factorization.

628961552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105770 (or 105764 counting only the distinct ones).

The product of its digits is 259200, while the sum is 44.

The square root of 628961552 is about 25079.1058851786. The cubic root of 628961552 is about 856.7906123222.

The spelling of 628961552 in words is "six hundred twenty-eight million, nine hundred sixty-one thousand, five hundred fifty-two".