870191140 has 72 divisors (see below), whose sum is σ = 2261528640. Its totient is φ = 275393664.

The previous prime is 870191099. The next prime is 870191149. The reversal of 870191140 is 41191078.

It is not an unprimeable number, because it can be changed into a prime (870191149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5271 + ... + 42049.

It is an arithmetic number, because the mean of its divisors is an integer number (31410120).

Almost surely, 2^870191140 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 870191140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1130764320).

870191140 is an abundant number, since it is smaller than the sum of its proper divisors (1391337500).

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

870191140 is a wasteful number, since it uses less digits than its factorization.

870191140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36821 (or 36806 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 870191140 is about 29499.0023560120. The cubic root of 870191140 is about 954.7101776717.

The spelling of 870191140 in words is "eight hundred seventy million, one hundred ninety-one thousand, one hundred forty".