628156 has 12 divisors (see below), whose sum is σ = 1120392. Its totient is φ = 308048.

The previous prime is 628139. The next prime is 628171. The reversal of 628156 is 651826.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1270 + ... + 1693.

It is an arithmetic number, because the mean of its divisors is an integer number (93366).

2⁶²⁸¹⁵⁶ is an apocalyptic number.

628156 is the 424-th nonagonal number.

It is an amenable number.

628156 is a deficient number, since it is larger than the sum of its proper divisors (492236).

628156 is a wasteful number, since it uses less digits than its factorization.

628156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3020 (or 3018 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 628156 is about 792.5629312553. The cubic root of 628156 is about 85.6424673548.

It can be divided in two parts, 628 and 156, that added together give a square (784 = 28²).

The spelling of 628156 in words is "six hundred twenty-eight thousand, one hundred fifty-six".