1028170858 has 32 divisors (see below), whose sum is σ = 1856094912. Its totient is φ = 420873600.

The previous prime is 1028170853. The next prime is 1028170861. The reversal of 1028170858 is 8580718201.

It is a self number, because there is not a number n which added to its sum of digits gives 1028170858.

It is not an unprimeable number, because it can be changed into a prime (1028170853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32116 + ... + 55567.

It is an arithmetic number, because the mean of its divisors is an integer number (58002966).

Almost surely, 2^1028170858 is an apocalyptic number.

1028170858 is a deficient number, since it is larger than the sum of its proper divisors (827924054).

1028170858 is a wasteful number, since it uses less digits than its factorization.

1028170858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87750.

The product of its (nonzero) digits is 35840, while the sum is 40.

The square root of 1028170858 is about 32065.1034303649. The cubic root of 1028170858 is about 1009.3034631547.

The spelling of 1028170858 in words is "one billion, twenty-eight million, one hundred seventy thousand, eight hundred fifty-eight".