8164207028 has 24 divisors (see below), whose sum is σ = 14728127400. Its totient is φ = 3956992128.

The previous prime is 8164207003. The next prime is 8164207043. The reversal of 8164207028 is 8207024618.

It can be written as a sum of positive squares in 4 ways, for example, as 1829957284 + 6334249744 = 42778^2 + 79588^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8164206982 and 8164207000.

It is a congruent number.

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, 62723 + ... + 142346.

It is an arithmetic number, because the mean of its divisors is an integer number (613671975).

Almost surely, 2^8164207028 is an apocalyptic number.

It is an amenable number.

8164207028 is a deficient number, since it is larger than the sum of its proper divisors (6563920372).

8164207028 is a wasteful number, since it uses less digits than its factorization.

8164207028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205379 (or 205377 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 8164207028 is about 90356.0016158307. The cubic root of 8164207028 is about 2013.5913474162.

The spelling of 8164207028 in words is "eight billion, one hundred sixty-four million, two hundred seven thousand, twenty-eight".