628432 has 40 divisors (see below), whose sum is σ = 1444352. Its totient is φ = 259200.

The previous prime is 628427. The next prime is 628447. The reversal of 628432 is 234826.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 628397 and 628406.

It is a congruent number.

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, 3382 + ... + 3562.

2⁶²⁸⁴³² is an apocalyptic number.

628432 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 628432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (722176).

628432 is an abundant number, since it is smaller than the sum of its proper divisors (815920).

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

628432 is a wasteful number, since it uses less digits than its factorization.

628432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227 (or 221 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

The square root of 628432 is about 792.7370307990. The cubic root of 628432 is about 85.6550087511.

The spelling of 628432 in words is "six hundred twenty-eight thousand, four hundred thirty-two".