28064200686 has 16 divisors (see below), whose sum is σ = 59082528000. Its totient is φ = 8862379128.

The previous prime is 28064200663. The next prime is 28064200727. The reversal of 28064200686 is 68600246082.

It is a super-3 number, since 3×28064200686³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 123088486 + ... + 123088713.

It is an arithmetic number, because the mean of its divisors is an integer number (3692658000).

Almost surely, 2^28064200686 is an apocalyptic number.

28064200686 is an abundant number, since it is smaller than the sum of its proper divisors (31018327314).

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

28064200686 is a wasteful number, since it uses less digits than its factorization.

28064200686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246177223.

The product of its (nonzero) digits is 221184, while the sum is 42.

The spelling of 28064200686 in words is "twenty-eight billion, sixty-four million, two hundred thousand, six hundred eighty-six".