628782 has 32 divisors (see below), whose sum is σ = 1569024. Its totient is φ = 163200.

The previous prime is 628781. The next prime is 628783. The reversal of 628782 is 287826.

It is an interprime number because it is at equal distance from previous prime (628781) and next prime (628783).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 628782.

It is not an unprimeable number, because it can be changed into a prime (628781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219 + ... + 1142.

It is an arithmetic number, because the mean of its divisors is an integer number (49032).

2⁶²⁸⁷⁸² is an apocalyptic number.

628782 is an abundant number, since it is smaller than the sum of its proper divisors (940242).

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

628782 is a wasteful number, since it uses less digits than its factorization.

628782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1384.

The product of its digits is 10752, while the sum is 33.

The square root of 628782 is about 792.9577542341. The cubic root of 628782 is about 85.6709074159.

The spelling of 628782 in words is "six hundred twenty-eight thousand, seven hundred eighty-two".