212763845 has 32 divisors (see below), whose sum is σ = 297561600. Its totient is φ = 143041536.

The previous prime is 212763833. The next prime is 212763917. The reversal of 212763845 is 548367212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 212763845 - 2¹² = 212759749 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212763799 and 212763808.

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 520001 + ... + 520409.

It is an arithmetic number, because the mean of its divisors is an integer number (9298800).

Almost surely, 2^212763845 is an apocalyptic number.

It is an amenable number.

212763845 is a deficient number, since it is larger than the sum of its proper divisors (84797755).

212763845 is a wasteful number, since it uses less digits than its factorization.

212763845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677.

The product of its digits is 80640, while the sum is 38.

The square root of 212763845 is about 14586.4267385813. The cubic root of 212763845 is about 596.9884699525.

The spelling of 212763845 in words is "two hundred twelve million, seven hundred sixty-three thousand, eight hundred forty-five".