28357530605 has 16 divisors (see below), whose sum is σ = 34778985984. Its totient is φ = 22186778880.

The previous prime is 28357530601. The next prime is 28357530613. The reversal of 28357530605 is 50603575382.

It is not a de Polignac number, because 28357530605 - 2² = 28357530601 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28357530601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275504 + ... + 364166.

It is an arithmetic number, because the mean of its divisors is an integer number (2173686624).

Almost surely, 2^28357530605 is an apocalyptic number.

It is an amenable number.

28357530605 is a deficient number, since it is larger than the sum of its proper divisors (6421455379).

28357530605 is a wasteful number, since it uses less digits than its factorization.

28357530605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90076.

The product of its (nonzero) digits is 756000, while the sum is 44.

The spelling of 28357530605 in words is "twenty-eight billion, three hundred fifty-seven million, five hundred thirty thousand, six hundred five".