870940 has 24 divisors (see below), whose sum is σ = 2090592. Its totient is φ = 298560.

The previous prime is 870931. The next prime is 870953. The reversal of 870940 is 49078.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 870899 and 870908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2971 + ... + 3250.

It is an arithmetic number, because the mean of its divisors is an integer number (87108).

2⁸⁷⁰⁹⁴⁰ is an apocalyptic number.

It is an amenable number.

870940 is an abundant number, since it is smaller than the sum of its proper divisors (1219652).

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

870940 is a wasteful number, since it uses less digits than its factorization.

870940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6237 (or 6235 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 870940 is about 933.2416621647. The cubic root of 870940 is about 95.4983963986.

The spelling of 870940 in words is "eight hundred seventy thousand, nine hundred forty".