28228129118 has 32 divisors (see below), whose sum is σ = 48961635840. Its totient is φ = 11955615840.

The previous prime is 28228129087. The next prime is 28228129211. The reversal of 28228129118 is 81192182282.

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 15 ways as a sum of consecutive naturals, for example, 688088 + ... + 727956.

It is an arithmetic number, because the mean of its divisors is an integer number (1530051120).

Almost surely, 2^28228129118 is an apocalyptic number.

28228129118 is a deficient number, since it is larger than the sum of its proper divisors (20733506722).

28228129118 is a wasteful number, since it uses less digits than its factorization.

28228129118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40472.

The product of its digits is 73728, while the sum is 44.

The spelling of 28228129118 in words is "twenty-eight billion, two hundred twenty-eight million, one hundred twenty-nine thousand, one hundred eighteen".