628072 has 8 divisors (see below), whose sum is σ = 1177650. Its totient is φ = 314032.

The previous prime is 628063. The next prime is 628093. The reversal of 628072 is 270826.

It can be written as a sum of positive squares in only one way, i.e., 391876 + 236196 = 626^2 + 486^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39247 + ... + 39262.

2⁶²⁸⁰⁷² is an apocalyptic number.

It is an amenable number.

628072 is a deficient number, since it is larger than the sum of its proper divisors (549578).

628072 is a wasteful number, since it uses less digits than its factorization.

628072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78515 (or 78511 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 628072 is about 792.5099368462. The cubic root of 628072 is about 85.6386496790.

Adding to 628072 its reverse (270826), we get a palindrome (898898).

The spelling of 628072 in words is "six hundred twenty-eight thousand, seventy-two".