212243850 has 288 divisors, whose sum is σ = 721453824. Its totient is φ = 43545600.

The previous prime is 212243833. The next prime is 212243879. The reversal of 212243850 is 58342212.

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 143 ways as a sum of consecutive naturals, for example, 2907414 + ... + 2907486.

It is an arithmetic number, because the mean of its divisors is an integer number (2505048).

Almost surely, 2^212243850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212243850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (360726912).

212243850 is an abundant number, since it is smaller than the sum of its proper divisors (509209974).

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

212243850 is a wasteful number, since it uses less digits than its factorization.

212243850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 212243850 is about 14568.5912153509. The cubic root of 212243850 is about 596.5017264439.

The spelling of 212243850 in words is "two hundred twelve million, two hundred forty-three thousand, eight hundred fifty".