211947132 has 24 divisors (see below), whose sum is σ = 495107200. Its totient is φ = 70568496.

The previous prime is 211947119. The next prime is 211947149. The reversal of 211947132 is 231749112.

211947132 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 211947132.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1419 + ... + 20637.

Almost surely, 2^211947132 is an apocalyptic number.

It is an amenable number.

211947132 is an abundant number, since it is smaller than the sum of its proper divisors (283160068).

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

211947132 is a wasteful number, since it uses less digits than its factorization.

211947132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20145 (or 20143 counting only the distinct ones).

The product of its digits is 3024, while the sum is 30.

The square root of 211947132 is about 14558.4041707874. The cubic root of 211947132 is about 596.2236259754.

The spelling of 211947132 in words is "two hundred eleven million, nine hundred forty-seven thousand, one hundred thirty-two".