632128028 has 18 divisors (see below), whose sum is σ = 1286832456. Its totient is φ = 270911928.

The previous prime is 632128027. The next prime is 632128031. The reversal of 632128028 is 820821236.

It is a junction number, because it is equal to n+sod(n) for n = 632127985 and 632128003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (632128027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1612376 + ... + 1612767.

It is an arithmetic number, because the mean of its divisors is an integer number (71490692).

Almost surely, 2^632128028 is an apocalyptic number.

It is an amenable number.

632128028 is an abundant number, since it is smaller than the sum of its proper divisors (654704428).

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

632128028 is a wasteful number, since it uses less digits than its factorization.

632128028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3225161 (or 3225152 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 632128028 is about 25142.1563912088. The cubic root of 632128028 is about 858.2260295643.

The spelling of 632128028 in words is "six hundred thirty-two million, one hundred twenty-eight thousand, twenty-eight".