870931028 has 24 divisors (see below), whose sum is σ = 1671317760. Its totient is φ = 393822720.

The previous prime is 870931027. The next prime is 870931043. The reversal of 870931028 is 820139078.

It is a junction number, because it is equal to n+sod(n) for n = 870930982 and 870931000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870931021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42788 + ... + 59771.

It is an arithmetic number, because the mean of its divisors is an integer number (69638240).

Almost surely, 2^870931028 is an apocalyptic number.

It is an amenable number.

870931028 is a deficient number, since it is larger than the sum of its proper divisors (800386732).

870931028 is a wasteful number, since it uses less digits than its factorization.

870931028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102767 (or 102765 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 870931028 is about 29511.5405900810. The cubic root of 870931028 is about 954.9806847148.

The spelling of 870931028 in words is "eight hundred seventy million, nine hundred thirty-one thousand, twenty-eight".