628488 has 96 divisors (see below), whose sum is σ = 2059200. Its totient is φ = 169344.

The previous prime is 628487. The next prime is 628493. The reversal of 628488 is 884826.

It is a super-2 number, since 2×628488² = 789994332288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628487) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14595 + ... + 14637.

It is an arithmetic number, because the mean of its divisors is an integer number (21450).

2⁶²⁸⁴⁸⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 628488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1029600).

628488 is an abundant number, since it is smaller than the sum of its proper divisors (1430712).

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

628488 is a wasteful number, since it uses less digits than its factorization.

628488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 84 counting only the distinct ones).

The product of its digits is 24576, while the sum is 36.

The square root of 628488 is about 792.7723506783. The cubic root of 628488 is about 85.6575529340.

The spelling of 628488 in words is "six hundred twenty-eight thousand, four hundred eighty-eight".