28620091670 has 16 divisors (see below), whose sum is σ = 51546552768. Its totient is φ = 11441283840.

The previous prime is 28620091663. The next prime is 28620091711. The reversal of 28620091670 is 7619002682.

28620091670 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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, 826286 + ... + 860225.

It is an arithmetic number, because the mean of its divisors is an integer number (3221659548).

Almost surely, 2^28620091670 is an apocalyptic number.

28620091670 is a deficient number, since it is larger than the sum of its proper divisors (22926461098).

28620091670 is a wasteful number, since it uses less digits than its factorization.

28620091670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1688215.

The product of its (nonzero) digits is 72576, while the sum is 41.

The spelling of 28620091670 in words is "twenty-eight billion, six hundred twenty million, ninety-one thousand, six hundred seventy".