628810 has 32 divisors (see below), whose sum is σ = 1395072. Its totient is φ = 198720.

The previous prime is 628801. The next prime is 628811. The reversal of 628810 is 18826.

It is a super-2 number, since 2×628810² = 790804032200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (628811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 565 + ... + 1255.

It is an arithmetic number, because the mean of its divisors is an integer number (43596).

2⁶²⁸⁸¹⁰ is an apocalyptic number.

628810 is an abundant number, since it is smaller than the sum of its proper divisors (766262).

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

628810 is a wasteful number, since it uses less digits than its factorization.

628810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 628810 is about 792.9754094548. The cubic root of 628810 is about 85.6721790542.

The spelling of 628810 in words is "six hundred twenty-eight thousand, eight hundred ten".