632390820 has 96 divisors (see below), whose sum is σ = 1939593600. Its totient is φ = 153237504.

The previous prime is 632390807. The next prime is 632390839. The reversal of 632390820 is 28093236.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18891 + ... + 40269.

It is an arithmetic number, because the mean of its divisors is an integer number (20204100).

Almost surely, 2^632390820 is an apocalyptic number.

632390820 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 632390820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (969796800).

632390820 is an abundant number, since it is smaller than the sum of its proper divisors (1307202780).

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

632390820 is a wasteful number, since it uses less digits than its factorization.

632390820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21437 (or 21435 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 632390820 is about 25147.3819710919. The cubic root of 632390820 is about 858.3449420200.

The spelling of 632390820 in words is "six hundred thirty-two million, three hundred ninety thousand, eight hundred twenty".