628734 has 8 divisors (see below), whose sum is σ = 1257480. Its totient is φ = 209576.

The previous prime is 628721. The next prime is 628753. The reversal of 628734 is 437826.

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

628734 is an admirable number.

It is a congruent number.

It is an unprimeable number.

628734 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52389 + ... + 52400.

It is an arithmetic number, because the mean of its divisors is an integer number (157185).

2⁶²⁸⁷³⁴ is an apocalyptic number.

628734 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

628734 is a wasteful number, since it uses less digits than its factorization.

628734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104794.

The product of its digits is 8064, while the sum is 30.

The square root of 628734 is about 792.9274872269. The cubic root of 628734 is about 85.6687273767.

The spelling of 628734 in words is "six hundred twenty-eight thousand, seven hundred thirty-four".