628822 has 12 divisors (see below), whose sum is σ = 972540. Its totient is φ = 304848.

The previous prime is 628819. The next prime is 628841. The reversal of 628822 is 228826.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8578 + ... + 8650.

It is an arithmetic number, because the mean of its divisors is an integer number (81045).

2⁶²⁸⁸²² is an apocalyptic number.

628822 is a deficient number, since it is larger than the sum of its proper divisors (343718).

628822 is an equidigital number, since it uses as much as digits as its factorization.

628822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207 (or 134 counting only the distinct ones).

The product of its digits is 3072, while the sum is 28.

The square root of 628822 is about 792.9829758576. The cubic root of 628822 is about 85.6727240305.

The spelling of 628822 in words is "six hundred twenty-eight thousand, eight hundred twenty-two".