212385915 has 64 divisors (see below), whose sum is σ = 433382400. Its totient is φ = 96671232.

The previous prime is 212385889. The next prime is 212385917. The reversal of 212385915 is 519583212.

It is not a de Polignac number, because 212385915 - 2¹⁰ = 212384891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212385915.

It is not an unprimeable number, because it can be changed into a prime (212385917) 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 63 ways as a sum of consecutive naturals, for example, 357859 + ... + 358451.

It is an arithmetic number, because the mean of its divisors is an integer number (6771600).

Almost surely, 2^212385915 is an apocalyptic number.

212385915 is an abundant number, since it is smaller than the sum of its proper divisors (220996485).

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

212385915 is a wasteful number, since it uses less digits than its factorization.

212385915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993 (or 987 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 212385915 is about 14573.4661285502. The cubic root of 212385915 is about 596.6347858431.

The spelling of 212385915 in words is "two hundred twelve million, three hundred eighty-five thousand, nine hundred fifteen".