28398238526 has 16 divisors (see below), whose sum is σ = 48685500384. Its totient is φ = 12169972224.

The previous prime is 28398238501. The next prime is 28398238537. The reversal of 28398238526 is 62583289382.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248846 + ... + 344558.

It is an arithmetic number, because the mean of its divisors is an integer number (3042843774).

Almost surely, 2^28398238526 is an apocalyptic number.

28398238526 is a deficient number, since it is larger than the sum of its proper divisors (20287261858).

28398238526 is a wasteful number, since it uses less digits than its factorization.

28398238526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116915.

The product of its digits is 9953280, while the sum is 56.

The spelling of 28398238526 in words is "twenty-eight billion, three hundred ninety-eight million, two hundred thirty-eight thousand, five hundred twenty-six".