212728614 has 64 divisors (see below), whose sum is σ = 502081536. Its totient is φ = 58817664.

The previous prime is 212728609. The next prime is 212728619. The reversal of 212728614 is 416827212.

It is an interprime number because it is at equal distance from previous prime (212728609) and next prime (212728619).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212728619) 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 31 ways as a sum of consecutive naturals, for example, 570132 + ... + 570504.

It is an arithmetic number, because the mean of its divisors is an integer number (7845024).

Almost surely, 2^212728614 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212728614, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251040768).

212728614 is an abundant number, since it is smaller than the sum of its proper divisors (289352922).

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

212728614 is a wasteful number, since it uses less digits than its factorization.

212728614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789.

The product of its digits is 10752, while the sum is 33.

The square root of 212728614 is about 14585.2190247524. The cubic root of 212728614 is about 596.9555168885.

The spelling of 212728614 in words is "two hundred twelve million, seven hundred twenty-eight thousand, six hundred fourteen".