870317028 has 288 divisors, whose sum is σ = 2792361600. Its totient is φ = 233356032.

The previous prime is 870317003. The next prime is 870317047. The reversal of 870317028 is 820713078.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 870316983 and 870317001.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8133751 + ... + 8133857.

It is an arithmetic number, because the mean of its divisors is an integer number (9695700).

Almost surely, 2^870317028 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 870317028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1396180800).

870317028 is an abundant number, since it is smaller than the sum of its proper divisors (1922044572).

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

870317028 is a wasteful number, since it uses less digits than its factorization.

870317028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 870317028 is about 29501.1360459220. The cubic root of 870317028 is about 954.7562138255.

The spelling of 870317028 in words is "eight hundred seventy million, three hundred seventeen thousand, twenty-eight".