632289140 has 72 divisors (see below), whose sum is σ = 1564335360. Its totient is φ = 214014528.

The previous prime is 632289121. The next prime is 632289187. The reversal of 632289140 is 41982236.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 632289140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73337 + ... + 81503.

It is an arithmetic number, because the mean of its divisors is an integer number (21726880).

Almost surely, 2^632289140 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 632289140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (782167680).

632289140 is an abundant number, since it is smaller than the sum of its proper divisors (932046220).

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

632289140 is a wasteful number, since it uses less digits than its factorization.

632289140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8269 (or 8260 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 632289140 is about 25145.3602081975. The cubic root of 632289140 is about 858.2989360856.

The spelling of 632289140 in words is "six hundred thirty-two million, two hundred eighty-nine thousand, one hundred forty".