212302340 has 12 divisors (see below), whose sum is σ = 445834956. Its totient is φ = 84920928.

The previous prime is 212302327. The next prime is 212302357. The reversal of 212302340 is 43203212.

It can be written as a sum of positive squares in 2 ways, for example, as 45995524 + 166306816 = 6782^2 + 12896^2 .

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 3 ways as a sum of consecutive naturals, for example, 5307539 + ... + 5307578.

It is an arithmetic number, because the mean of its divisors is an integer number (37152913).

Almost surely, 2^212302340 is an apocalyptic number.

212302340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212302340 is an abundant number, since it is smaller than the sum of its proper divisors (233532616).

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

212302340 is a wasteful number, since it uses less digits than its factorization.

212302340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10615126 (or 10615124 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 212302340 is about 14570.5984777565. The cubic root of 212302340 is about 596.5565159098.

Adding to 212302340 its reverse (43203212), we get a palindrome (255505552).

The spelling of 212302340 in words is "two hundred twelve million, three hundred two thousand, three hundred forty".