212665852 has 72 divisors (see below), whose sum is σ = 463565088. Its totient is φ = 83558400.

The previous prime is 212665847. The next prime is 212665853. The reversal of 212665852 is 258566212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212665853) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 331452 + ... + 332092.

It is an arithmetic number, because the mean of its divisors is an integer number (6438404).

Almost surely, 2^212665852 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212665852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231782544).

212665852 is an abundant number, since it is smaller than the sum of its proper divisors (250899236).

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

212665852 is a wasteful number, since it uses less digits than its factorization.

212665852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727 (or 708 counting only the distinct ones).

The product of its digits is 57600, while the sum is 37.

The square root of 212665852 is about 14583.0673042402. The cubic root of 212665852 is about 596.8968038854.

The spelling of 212665852 in words is "two hundred twelve million, six hundred sixty-five thousand, eight hundred fifty-two".