212905876 has 12 divisors (see below), whose sum is σ = 379615572. Its totient is φ = 104444288.

The previous prime is 212905843. The next prime is 212905877. The reversal of 212905876 is 678509212.

212905876 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 145829776 + 67076100 = 12076^2 + 8190^2 .

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212905877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 501925 + ... + 502348.

It is an arithmetic number, because the mean of its divisors is an integer number (31634631).

Almost surely, 2^212905876 is an apocalyptic number.

It is an amenable number.

212905876 is a deficient number, since it is larger than the sum of its proper divisors (166709696).

212905876 is a wasteful number, since it uses less digits than its factorization.

212905876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004330 (or 1004328 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 212905876 is about 14591.2945279026. The cubic root of 212905876 is about 597.1212807518.

The spelling of 212905876 in words is "two hundred twelve million, nine hundred five thousand, eight hundred seventy-six".