212768534 has 16 divisors (see below), whose sum is σ = 360173520. Its totient is φ = 93377760.

The previous prime is 212768533. The next prime is 212768539. The reversal of 212768534 is 435867212.

It is a happy number.

212768534 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212768533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166109 + ... + 167384.

It is an arithmetic number, because the mean of its divisors is an integer number (22510845).

Almost surely, 2^212768534 is an apocalyptic number.

212768534 is a deficient number, since it is larger than the sum of its proper divisors (147404986).

212768534 is a wasteful number, since it uses less digits than its factorization.

212768534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333535.

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

The square root of 212768534 is about 14586.5874693158. The cubic root of 212768534 is about 596.9928555008.

The spelling of 212768534 in words is "two hundred twelve million, seven hundred sixty-eight thousand, five hundred thirty-four".