628834 has 8 divisors (see below), whose sum is σ = 948060. Its totient is φ = 312816.

The previous prime is 628819. The next prime is 628841. The reversal of 628834 is 438826.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 429025 + 199809 = 655^2 + 447^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 628796 and 628805.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229 + ... + 1144.

2⁶²⁸⁸³⁴ is an apocalyptic number.

628834 is a deficient number, since it is larger than the sum of its proper divisors (319226).

628834 is a wasteful number, since it uses less digits than its factorization.

628834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1604.

The product of its digits is 9216, while the sum is 31.

The square root of 628834 is about 792.9905421882. The cubic root of 628834 is about 85.6732689998.

The spelling of 628834 in words is "six hundred twenty-eight thousand, eight hundred thirty-four".