212030252 has 72 divisors (see below), whose sum is σ = 453852000. Its totient is φ = 86534784.

The previous prime is 212030201. The next prime is 212030257. The reversal of 212030252 is 252030212.

It is a self number, because there is not a number n which added to its sum of digits gives 212030252.

It is not an unprimeable number, because it can be changed into a prime (212030257) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2904488 + ... + 2904560.

It is an arithmetic number, because the mean of its divisors is an integer number (6303500).

Almost surely, 2^212030252 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 212030252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226926000).

212030252 is an abundant number, since it is smaller than the sum of its proper divisors (241821748).

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

212030252 is an equidigital number, since it uses as much as digits as its factorization.

212030252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 212030252 is about 14561.2585994481. The cubic root of 212030252 is about 596.3015567787.

Adding to 212030252 its reverse (252030212), we get a palindrome (464060464).

The spelling of 212030252 in words is "two hundred twelve million, thirty thousand, two hundred fifty-two".