212808830 has 64 divisors (see below), whose sum is σ = 427932288. Its totient is φ = 75686400.

The previous prime is 212808829. The next prime is 212808847. The reversal of 212808830 is 38808212.

It is a congruent number.

It is an unprimeable number.

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, 726164 + ... + 726456.

It is an arithmetic number, because the mean of its divisors is an integer number (6686442).

Almost surely, 2^212808830 is an apocalyptic number.

212808830 is an abundant number, since it is smaller than the sum of its proper divisors (215123458).

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

212808830 is a wasteful number, since it uses less digits than its factorization.

212808830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501.

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 212808830 is about 14587.9686728482. The cubic root of 212808830 is about 597.0305410632.

The spelling of 212808830 in words is "two hundred twelve million, eight hundred eight thousand, eight hundred thirty".