212095845 has 54 divisors (see below), whose sum is σ = 400485618. Its totient is φ = 103791168.

The previous prime is 212095843. The next prime is 212095901. The reversal of 212095845 is 548590212.

It can be written as a sum of positive squares in 3 ways, for example, as 1004004 + 211091841 = 1002^2 + 14529^2 .

It is not a de Polignac number, because 212095845 - 2¹ = 212095843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212095843) 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 53 ways as a sum of consecutive naturals, for example, 1269952 + ... + 1270118.

Almost surely, 2^212095845 is an apocalyptic number.

It is an amenable number.

212095845 is a deficient number, since it is larger than the sum of its proper divisors (188389773).

212095845 is a wasteful number, since it uses less digits than its factorization.

212095845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 212095845 is about 14563.5107374561. The cubic root of 212095845 is about 596.3630404193.

The spelling of 212095845 in words is "two hundred twelve million, ninety-five thousand, eight hundred forty-five".