212717204 has 48 divisors (see below), whose sum is σ = 442337280. Its totient is φ = 87575040.

The previous prime is 212717201. The next prime is 212717221. The reversal of 212717204 is 402717212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212717201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195149 + ... + 196235.

It is an arithmetic number, because the mean of its divisors is an integer number (9215360).

Almost surely, 2^212717204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212717204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221168640).

212717204 is an abundant number, since it is smaller than the sum of its proper divisors (229620076).

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

212717204 is a wasteful number, since it uses less digits than its factorization.

212717204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368 (or 1366 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 212717204 is about 14584.8278700847. The cubic root of 212717204 is about 596.9448438466.

The spelling of 212717204 in words is "two hundred twelve million, seven hundred seventeen thousand, two hundred four".