212284670 has 32 divisors (see below), whose sum is σ = 412201440. Its totient is φ = 78249600.

The previous prime is 212284607. The next prime is 212284673. The reversal of 212284670 is 76482212.

It is a super-2 number, since 2×212284670² = 90129562234017800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212284673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110720 + ... + 112620.

It is an arithmetic number, because the mean of its divisors is an integer number (12881295).

Almost surely, 2^212284670 is an apocalyptic number.

212284670 is a deficient number, since it is larger than the sum of its proper divisors (199916770).

212284670 is a wasteful number, since it uses less digits than its factorization.

212284670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2780.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 212284670 is about 14569.9921070672. The cubic root of 212284670 is about 596.5399649129.

The spelling of 212284670 in words is "two hundred twelve million, two hundred eighty-four thousand, six hundred seventy".