870140840 has 32 divisors (see below), whose sum is σ = 2010734280. Its totient is φ = 338648832.

The previous prime is 870140837. The next prime is 870140857. The reversal of 870140840 is 48041078.

It can be written as a sum of positive squares in 4 ways, for example, as 870132004 + 8836 = 29498^2 + 94^2 .

It is a junction number, because it is equal to n+sod(n) for n = 870140797 and 870140806.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292487 + ... + 295446.

Almost surely, 2^870140840 is an apocalyptic number.

It is an amenable number.

870140840 is an abundant number, since it is smaller than the sum of its proper divisors (1140593440).

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

870140840 is a wasteful number, since it uses less digits than its factorization.

870140840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587981 (or 587977 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 870140840 is about 29498.1497724857. The cubic root of 870140840 is about 954.6917821548.

The spelling of 870140840 in words is "eight hundred seventy million, one hundred forty thousand, eight hundred forty".