870443520 has 320 divisors, whose sum is σ = 3022842240. Its totient is φ = 212860928.

The previous prime is 870443507. The next prime is 870443569. The reversal of 870443520 is 25344078.

It is a tau number, because it is divible by the number of its divisors (320).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 7702984 + ... + 7703096.

It is an arithmetic number, because the mean of its divisors is an integer number (9446382).

Almost surely, 2^870443520 is an apocalyptic number.

870443520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 870443520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1511421120).

870443520 is an abundant number, since it is smaller than the sum of its proper divisors (2152398720).

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

870443520 is a wasteful number, since it uses less digits than its factorization.

870443520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 870443520 is about 29503.2798176745. The cubic root of 870443520 is about 954.8024663859.

Adding to 870443520 its reverse (25344078), we get a palindrome (895787598).

The spelling of 870443520 in words is "eight hundred seventy million, four hundred forty-three thousand, five hundred twenty".