212506252 has 24 divisors (see below), whose sum is σ = 426849696. Its totient is φ = 90680448.

The previous prime is 212506247. The next prime is 212506297. The reversal of 212506252 is 252605212.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 9763 + ... + 22810.

It is an arithmetic number, because the mean of its divisors is an integer number (17785404).

Almost surely, 2^212506252 is an apocalyptic number.

It is an amenable number.

212506252 is an abundant number, since it is smaller than the sum of its proper divisors (214343444).

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

212506252 is a wasteful number, since it uses less digits than its factorization.

212506252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32817 (or 32815 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 212506252 is about 14577.5941773669. The cubic root of 212506252 is about 596.7474481862.

The spelling of 212506252 in words is "two hundred twelve million, five hundred six thousand, two hundred fifty-two".