870212 has 12 divisors (see below), whose sum is σ = 1740480. Its totient is φ = 372936.

The previous prime is 870211. The next prime is 870223. The reversal of 870212 is 212078.

870212 is an admirable number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 870212.

It is not an unprimeable number, because it can be changed into a prime (870211) 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, 15512 + ... + 15567.

It is an arithmetic number, because the mean of its divisors is an integer number (145040).

2⁸⁷⁰²¹² is an apocalyptic number.

It is an amenable number.

870212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

870212 is a wasteful number, since it uses less digits than its factorization.

870212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31090 (or 31088 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 870212 is about 932.8515423153. The cubic root of 870212 is about 95.4717806300.

The spelling of 870212 in words is "eight hundred seventy thousand, two hundred twelve".