212904166 has 8 divisors (see below), whose sum is σ = 319431600. Its totient is φ = 106426968.

The previous prime is 212904157. The next prime is 212904173. The reversal of 212904166 is 661409212.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 940 + ... + 20656.

It is an arithmetic number, because the mean of its divisors is an integer number (39928950).

Almost surely, 2^212904166 is an apocalyptic number.

212904166 is a deficient number, since it is larger than the sum of its proper divisors (106527434).

212904166 is a wasteful number, since it uses less digits than its factorization.

212904166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25118.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 212904166 is about 14591.2359312020. The cubic root of 212904166 is about 597.1196821109.

The spelling of 212904166 in words is "two hundred twelve million, nine hundred four thousand, one hundred sixty-six".