28157585902 has 16 divisors (see below), whose sum is σ = 44245886400. Its totient is φ = 13421247840.

The previous prime is 28157585893. The next prime is 28157585903. The reversal of 28157585902 is 20958575182.

It is a self number, because there is not a number n which added to its sum of digits gives 28157585902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28157585903) 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 in 7 ways as a sum of consecutive naturals, for example, 3068049 + ... + 3077212.

It is an arithmetic number, because the mean of its divisors is an integer number (2765367900).

Almost surely, 2^28157585902 is an apocalyptic number.

28157585902 is a deficient number, since it is larger than the sum of its proper divisors (16088300498).

28157585902 is a wasteful number, since it uses less digits than its factorization.

28157585902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6145371.

The product of its (nonzero) digits is 2016000, while the sum is 52.

The spelling of 28157585902 in words is "twenty-eight billion, one hundred fifty-seven million, five hundred eighty-five thousand, nine hundred two".