212432166 has 16 divisors (see below), whose sum is σ = 472071600. Its totient is φ = 70810704.

The previous prime is 212432149. The next prime is 212432173. The reversal of 212432166 is 661234212.

212432166 is a `hidden beast` number, since 212 + 432 + 16 + 6 = 666.

212432166 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 (27).

It is a Curzon number.

It is a congruent number.

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, 1966911 + ... + 1967018.

It is an arithmetic number, because the mean of its divisors is an integer number (29504475).

Almost surely, 2^212432166 is an apocalyptic number.

212432166 is an abundant number, since it is smaller than the sum of its proper divisors (259639434).

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

212432166 is a wasteful number, since it uses less digits than its factorization.

212432166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3933940 (or 3933934 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 212432166 is about 14575.0528643981. The cubic root of 212432166 is about 596.6780921559.

Adding to 212432166 its reverse (661234212), we get a palindrome (873666378).

It can be divided in two parts, 21243 and 2166, that added together give a square (23409 = 153²).

The spelling of 212432166 in words is "two hundred twelve million, four hundred thirty-two thousand, one hundred sixty-six".