28485879803 has 16 divisors (see below), whose sum is σ = 30145505280. Its totient is φ = 26886577536.

The previous prime is 28485879797. The next prime is 28485879809. The reversal of 28485879803 is 30897858482.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28485879797) and next prime (28485879809).

It is a cyclic number.

It is not a de Polignac number, because 28485879803 - 2¹⁰ = 28485878779 is a prime.

It is a super-2 number, since 2×28485879803² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28485879809) 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 15 ways as a sum of consecutive naturals, for example, 70451 + ... + 248867.

It is an arithmetic number, because the mean of its divisors is an integer number (1884094080).

Almost surely, 2^28485879803 is an apocalyptic number.

28485879803 is a deficient number, since it is larger than the sum of its proper divisors (1659625477).

28485879803 is a wasteful number, since it uses less digits than its factorization.

28485879803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178586.

The product of its (nonzero) digits is 30965760, while the sum is 62.

The spelling of 28485879803 in words is "twenty-eight billion, four hundred eighty-five million, eight hundred seventy-nine thousand, eight hundred three".