212764134 has 64 divisors (see below), whose sum is σ = 480748032. Its totient is φ = 62208000.

The previous prime is 212764133. The next prime is 212764169. The reversal of 212764134 is 431467212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212764133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 368454 + ... + 369030.

It is an arithmetic number, because the mean of its divisors is an integer number (7511688).

Almost surely, 2^212764134 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212764134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240374016).

212764134 is an abundant number, since it is smaller than the sum of its proper divisors (267983898).

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

212764134 is a wasteful number, since it uses less digits than its factorization.

212764134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781.

The product of its digits is 8064, while the sum is 30.

The square root of 212764134 is about 14586.4366450480. The cubic root of 212764134 is about 596.9887402515.

The spelling of 212764134 in words is "two hundred twelve million, seven hundred sixty-four thousand, one hundred thirty-four".