212829686 has 4 divisors (see below), whose sum is σ = 319244532. Its totient is φ = 106414842.

The previous prime is 212829641. The next prime is 212829689. The reversal of 212829686 is 686928212.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212829689) 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 as a sum of consecutive naturals, namely, 53207420 + ... + 53207423.

It is an arithmetic number, because the mean of its divisors is an integer number (79811133).

Almost surely, 2^212829686 is an apocalyptic number.

212829686 is a deficient number, since it is larger than the sum of its proper divisors (106414846).

212829686 is a wasteful number, since it uses less digits than its factorization.

212829686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106414845.

The product of its digits is 165888, while the sum is 44.

The square root of 212829686 is about 14588.6834909803. The cubic root of 212829686 is about 597.0500441108.

The spelling of 212829686 in words is "two hundred twelve million, eight hundred twenty-nine thousand, six hundred eighty-six".