628244 has 6 divisors (see below), whose sum is σ = 1099434. Its totient is φ = 314120.

The previous prime is 628231. The next prime is 628261. The reversal of 628244 is 442826.

It can be written as a sum of positive squares in only one way, i.e., 592900 + 35344 = 770^2 + 188^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78527 + ... + 78534.

It is an arithmetic number, because the mean of its divisors is an integer number (183239).

2⁶²⁸²⁴⁴ is an apocalyptic number.

It is an amenable number.

628244 is a deficient number, since it is larger than the sum of its proper divisors (471190).

628244 is a wasteful number, since it uses less digits than its factorization.

628244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157065 (or 157063 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

The square root of 628244 is about 792.6184454074. The cubic root of 628244 is about 85.6464664597.

The spelling of 628244 in words is "six hundred twenty-eight thousand, two hundred forty-four".