28470688806 has 32 divisors (see below), whose sum is σ = 66589256448. Its totient is φ = 7945308000.

The previous prime is 28470688793. The next prime is 28470688837. The reversal of 28470688806 is 60888607482.

It is a happy number.

It is a super-3 number, since 3×28470688806³ (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 (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7880445 + ... + 7884056.

It is an arithmetic number, because the mean of its divisors is an integer number (2080914264).

Almost surely, 2^28470688806 is an apocalyptic number.

28470688806 is an abundant number, since it is smaller than the sum of its proper divisors (38118567642).

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

28470688806 is a wasteful number, since it uses less digits than its factorization.

28470688806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15764556.

The product of its (nonzero) digits is 8257536, while the sum is 57.

The spelling of 28470688806 in words is "twenty-eight billion, four hundred seventy million, six hundred eighty-eight thousand, eight hundred six".