217472132 has 12 divisors (see below), whose sum is σ = 380679936. Its totient is φ = 108706440.

The previous prime is 217472111. The next prime is 217472141. The reversal of 217472132 is 231274712.

217472132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 217472095 and 217472104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22757 + ... + 30867.

It is an arithmetic number, because the mean of its divisors is an integer number (31723328).

Almost surely, 2^217472132 is an apocalyptic number.

It is an amenable number.

217472132 is a deficient number, since it is larger than the sum of its proper divisors (163207804).

217472132 is a wasteful number, since it uses less digits than its factorization.

217472132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14818 (or 14816 counting only the distinct ones).

The product of its digits is 4704, while the sum is 29.

The square root of 217472132 is about 14746.9363598003. The cubic root of 217472132 is about 601.3600001885.

The spelling of 217472132 in words is "two hundred seventeen million, four hundred seventy-two thousand, one hundred thirty-two".