628826 has 16 divisors (see below), whose sum is σ = 1042848. Its totient is φ = 282000.

The previous prime is 628819. The next prime is 628841.

It is a happy number.

628826 is nontrivially palindromic in base 8 and base 10.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 628792 and 628801.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2081 + ... + 2363.

It is an arithmetic number, because the mean of its divisors is an integer number (65178).

2⁶²⁸⁸²⁶ is an apocalyptic number.

628826 is a deficient number, since it is larger than the sum of its proper divisors (414022).

628826 is a wasteful number, since it uses less digits than its factorization.

628826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397.

The product of its digits is 9216, while the sum is 32.

The square root of 628826 is about 792.9854979758. The cubic root of 628826 is about 85.6729056877.

It can be divided in two parts, 62 and 8826, that added together give a palindrome (8888).

The spelling of 628826 in words is "six hundred twenty-eight thousand, eight hundred twenty-six".