630528 has 36 divisors (see below), whose sum is σ = 1680168. Its totient is φ = 209920.

The previous prime is 630523. The next prime is 630529. The reversal of 630528 is 825036.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 630498 and 630507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 358 + ... + 1178.

2⁶³⁰⁵²⁸ 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 630528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (840084).

630528 is an abundant number, since it is smaller than the sum of its proper divisors (1049640).

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

630528 is an equidigital number, since it uses as much as digits as its factorization.

630528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840 (or 826 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 630528 is about 794.0579323954. The cubic root of 630528 is about 85.7501310393.

The spelling of 630528 in words is "six hundred thirty thousand, five hundred twenty-eight".