8279728084 has 6 divisors (see below), whose sum is σ = 14489524154. Its totient is φ = 4139864040.

The previous prime is 8279728081. The next prime is 8279728099. The reversal of 8279728084 is 4808279728.

It can be written as a sum of positive squares in only one way, i.e., 6268205584 + 2011522500 = 79172^2 + 44850^2 .

It is a super-2 number, since 2×8279728084² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8279728081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1034966007 + ... + 1034966014.

Almost surely, 2^8279728084 is an apocalyptic number.

It is an amenable number.

8279728084 is a deficient number, since it is larger than the sum of its proper divisors (6209796070).

8279728084 is a wasteful number, since it uses less digits than its factorization.

8279728084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069932025 (or 2069932023 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 55.

The square root of 8279728084 is about 90993.0111821782. The cubic root of 8279728084 is about 2023.0441377590.

The spelling of 8279728084 in words is "eight billion, two hundred seventy-nine million, seven hundred twenty-eight thousand, eighty-four".