212786268 has 12 divisors (see below), whose sum is σ = 496501320. Its totient is φ = 70928752.

The previous prime is 212786267. The next prime is 212786279. The reversal of 212786268 is 862687212.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212786267) 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, 8866083 + ... + 8866106.

It is an arithmetic number, because the mean of its divisors is an integer number (41375110).

Almost surely, 2^212786268 is an apocalyptic number.

It is an amenable number.

212786268 is an abundant number, since it is smaller than the sum of its proper divisors (283715052).

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

212786268 is a wasteful number, since it uses less digits than its factorization.

212786268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17732196 (or 17732194 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 212786268 is about 14587.1953438624. The cubic root of 212786268 is about 597.0094412509.

The spelling of 212786268 in words is "two hundred twelve million, seven hundred eighty-six thousand, two hundred sixty-eight".