628017642 has 48 divisors (see below), whose sum is σ = 1572592320. Its totient is φ = 177414336.

The previous prime is 628017601. The next prime is 628017661. The reversal of 628017642 is 246710826.

628017642 is a `hidden beast` number, since 6 + 2 + 8 + 0 + 1 + 7 + 642 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 628017597 and 628017606.

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 23 ways as a sum of consecutive naturals, for example, 16788 + ... + 39215.

It is an arithmetic number, because the mean of its divisors is an integer number (32762340).

Almost surely, 2^628017642 is an apocalyptic number.

628017642 is an abundant number, since it is smaller than the sum of its proper divisors (944574678).

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

628017642 is a wasteful number, since it uses less digits than its factorization.

628017642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56107 (or 56104 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 628017642 is about 25060.2801660317. The cubic root of 628017642 is about 856.3617900680.

The spelling of 628017642 in words is "six hundred twenty-eight million, seventeen thousand, six hundred forty-two".