28318038156 has 96 divisors (see below), whose sum is σ = 74337177600. Its totient is φ = 9321333120.

The previous prime is 28318038143. The next prime is 28318038169. The reversal of 28318038156 is 65183081382.

It is an interprime number because it is at equal distance from previous prime (28318038143) and next prime (28318038169).

It is a super-2 number, since 2×28318038156² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 10600701 + ... + 10603371.

It is an arithmetic number, because the mean of its divisors is an integer number (774345600).

Almost surely, 2^28318038156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28318038156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37168588800).

28318038156 is an abundant number, since it is smaller than the sum of its proper divisors (46019139444).

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

28318038156 is a wasteful number, since it uses less digits than its factorization.

28318038156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3876 (or 3868 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 28318038156 in words is "twenty-eight billion, three hundred eighteen million, thirty-eight thousand, one hundred fifty-six".