870157128 has 16 divisors (see below), whose sum is σ = 2175392880. Its totient is φ = 290052368.

The previous prime is 870157103. The next prime is 870157129. The reversal of 870157128 is 821751078.

It is not an unprimeable number, because it can be changed into a prime (870157129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18128250 + ... + 18128297.

It is an arithmetic number, because the mean of its divisors is an integer number (135962055).

Almost surely, 2^870157128 is an apocalyptic number.

It is an amenable number.

870157128 is an abundant number, since it is smaller than the sum of its proper divisors (1305235752).

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

870157128 is a wasteful number, since it uses less digits than its factorization.

870157128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36256556 (or 36256552 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 39.

The square root of 870157128 is about 29498.4258563063. The cubic root of 870157128 is about 954.6977390153.

The spelling of 870157128 in words is "eight hundred seventy million, one hundred fifty-seven thousand, one hundred twenty-eight".