8028021858 has 16 divisors (see below), whose sum is σ = 16057603296. Its totient is φ = 2675747360.

The previous prime is 8028021847. The next prime is 8028021871. The reversal of 8028021858 is 8581208208.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8293 + ... + 126983.

It is an arithmetic number, because the mean of its divisors is an integer number (1003600206).

Almost surely, 2^8028021858 is an apocalyptic number.

8028021858 is an abundant number, since it is smaller than the sum of its proper divisors (8029581438).

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

8028021858 is a wasteful number, since it uses less digits than its factorization.

8028021858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129969.

The product of its (nonzero) digits is 81920, while the sum is 42.

The square root of 8028021858 is about 89599.2291149874. The cubic root of 8028021858 is about 2002.3324336525.

The spelling of 8028021858 in words is "eight billion, twenty-eight million, twenty-one thousand, eight hundred fifty-eight".