217893132 has 24 divisors (see below), whose sum is σ = 564908400. Its totient is φ = 72631008.

The previous prime is 217893119. The next prime is 217893149. The reversal of 217893132 is 231398712.

217893132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1008657 + ... + 1008872.

It is an arithmetic number, because the mean of its divisors is an integer number (23537850).

Almost surely, 2^217893132 is an apocalyptic number.

It is an amenable number.

217893132 is an abundant number, since it is smaller than the sum of its proper divisors (347015268).

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

217893132 is a wasteful number, since it uses less digits than its factorization.

217893132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2017542 (or 2017534 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 217893132 is about 14761.2036094622. The cubic root of 217893132 is about 601.7478036934.

The spelling of 217893132 in words is "two hundred seventeen million, eight hundred ninety-three thousand, one hundred thirty-two".