28603206831238 has 32 divisors (see below), whose sum is σ = 46228374593856. Its totient is φ = 13194854581248.

The previous prime is 28603206831181. The next prime is 28603206831247. The reversal of 28603206831238 is 83213860230682.

It is a super-3 number, since 3×28603206831238³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 571045431 + ... + 571095517.

It is an arithmetic number, because the mean of its divisors is an integer number (1444636706058).

Almost surely, 2^{28603206831238} is an apocalyptic number.

28603206831238 is a deficient number, since it is larger than the sum of its proper divisors (17625167762618).

28603206831238 is a wasteful number, since it uses less digits than its factorization.

28603206831238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60688.

The product of its (nonzero) digits is 3981312, while the sum is 52.

The spelling of 28603206831238 in words is "twenty-eight trillion, six hundred three billion, two hundred six million, eight hundred thirty-one thousand, two hundred thirty-eight".