870857140 has 12 divisors (see below), whose sum is σ = 1828800036. Its totient is φ = 348342848.

The previous prime is 870857137. The next prime is 870857159. The reversal of 870857140 is 41758078.

It can be written as a sum of positive squares in 2 ways, for example, as 628805776 + 242051364 = 25076^2 + 15558^2 .

It is a junction number, because it is equal to n+sod(n) for n = 870857093 and 870857102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21771409 + ... + 21771448.

It is an arithmetic number, because the mean of its divisors is an integer number (152400003).

Almost surely, 2^870857140 is an apocalyptic number.

It is an amenable number.

870857140 is an abundant number, since it is smaller than the sum of its proper divisors (957942896).

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

870857140 is a wasteful number, since it uses less digits than its factorization.

870857140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43542866 (or 43542864 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 40.

The square root of 870857140 is about 29510.2887142773. The cubic root of 870857140 is about 954.9536777510.

The spelling of 870857140 in words is "eight hundred seventy million, eight hundred fifty-seven thousand, one hundred forty".