632172220 has 24 divisors (see below), whose sum is σ = 1344369600. Its totient is φ = 249667392.

The previous prime is 632172193. The next prime is 632172223. The reversal of 632172220 is 22271236.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (632172223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198475 + ... + 201634.

It is an arithmetic number, because the mean of its divisors is an integer number (56015400).

Almost surely, 2^632172220 is an apocalyptic number.

It is an amenable number.

632172220 is an abundant number, since it is smaller than the sum of its proper divisors (712197380).

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

632172220 is a wasteful number, since it uses less digits than its factorization.

632172220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400197 (or 400195 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 632172220 is about 25143.0352185252. The cubic root of 632172220 is about 858.2460285936.

The spelling of 632172220 in words is "six hundred thirty-two million, one hundred seventy-two thousand, two hundred twenty".