212804218 has 16 divisors (see below), whose sum is σ = 366553440. Its totient is φ = 91638000.

The previous prime is 212804213. The next prime is 212804239. The reversal of 212804218 is 812408212.

It is not an unprimeable number, because it can be changed into a prime (212804213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254133 + ... + 254968.

It is an arithmetic number, because the mean of its divisors is an integer number (22909590).

Almost surely, 2^212804218 is an apocalyptic number.

212804218 is a deficient number, since it is larger than the sum of its proper divisors (153749222).

212804218 is a wasteful number, since it uses less digits than its factorization.

212804218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509133.

The product of its (nonzero) digits is 2048, while the sum is 28.

The square root of 212804218 is about 14587.8105965220. The cubic root of 212804218 is about 597.0262280769.

The spelling of 212804218 in words is "two hundred twelve million, eight hundred four thousand, two hundred eighteen".