212717734 has 4 divisors (see below), whose sum is σ = 319076604. Its totient is φ = 106358866.

The previous prime is 212717683. The next prime is 212717737. The reversal of 212717734 is 437717212.

212717734 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 212717734.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212717737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53179432 + ... + 53179435.

It is an arithmetic number, because the mean of its divisors is an integer number (79769151).

Almost surely, 2^212717734 is an apocalyptic number.

212717734 is a deficient number, since it is larger than the sum of its proper divisors (106358870).

212717734 is a wasteful number, since it uses less digits than its factorization.

212717734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106358869.

The product of its digits is 16464, while the sum is 34.

The square root of 212717734 is about 14584.8460396399. The cubic root of 212717734 is about 596.9453396230.

The spelling of 212717734 in words is "two hundred twelve million, seven hundred seventeen thousand, seven hundred thirty-four".