870912 has 120 divisors (see below), whose sum is σ = 2978976. Its totient is φ = 248832.

The previous prime is 870911. The next prime is 870917. The reversal of 870912 is 219078.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (870911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124413 + ... + 124419.

2⁸⁷⁰⁹¹² 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 870912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1489488).

870912 is an abundant number, since it is smaller than the sum of its proper divisors (2108064).

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

870912 is an frugal number, since it uses more digits than its factorization.

870912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40 (or 12 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 870912 is about 933.2266605707. The cubic root of 870912 is about 95.4973729895.

The spelling of 870912 in words is "eight hundred seventy thousand, nine hundred twelve".