212027284 has 12 divisors (see below), whose sum is σ = 424054624. Its totient is φ = 90868824.

The previous prime is 212027273. The next prime is 212027311. The reversal of 212027284 is 482720212.

212027284 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 7572403 = 212027284 / (2 + 1 + 2 + 0 + 2 + 7 + 2 + 8 + 4).

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, 3786174 + ... + 3786229.

Almost surely, 2^212027284 is an apocalyptic number.

It is an amenable number.

212027284 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

212027284 is a wasteful number, since it uses less digits than its factorization.

212027284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7572414 (or 7572412 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 212027284 is about 14561.1566848242. The cubic root of 212027284 is about 596.2987744222.

Adding to 212027284 its reverse (482720212), we get a palindrome (694747496).

The spelling of 212027284 in words is "two hundred twelve million, twenty-seven thousand, two hundred eighty-four".