28523886498 has 12 divisors (see below), whose sum is σ = 61801754118. Its totient is φ = 9507962160.

The previous prime is 28523886493. The next prime is 28523886499. The reversal of 28523886498 is 89468832582.

28523886498 is a `hidden beast` number, since 28 + 523 + 8 + 86 + 4 + 9 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 22364305209 + 6159581289 = 149547^2 + 78483^2 .

It is a super-2 number, since 2×28523886498² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28523886491) 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 5 ways as a sum of consecutive naturals, for example, 792330163 + ... + 792330198.

Almost surely, 2^28523886498 is an apocalyptic number.

28523886498 is an abundant number, since it is smaller than the sum of its proper divisors (33277867620).

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

28523886498 is a wasteful number, since it uses less digits than its factorization.

28523886498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584660369 (or 1584660366 counting only the distinct ones).

The product of its digits is 53084160, while the sum is 63.

The spelling of 28523886498 in words is "twenty-eight billion, five hundred twenty-three million, eight hundred eighty-six thousand, four hundred ninety-eight".