28318302012 has 384 divisors, whose sum is σ = 94218485760. Its totient is φ = 6375075840.

The previous prime is 28318301989. The next prime is 28318302037. The reversal of 28318302012 is 21020381382.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 28984468 + ... + 28985444.

It is an arithmetic number, because the mean of its divisors is an integer number (245360640).

Almost surely, 2^28318302012 is an apocalyptic number.

28318302012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28318302012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47109242880).

28318302012 is an abundant number, since it is smaller than the sum of its proper divisors (65900183748).

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

28318302012 is a wasteful number, since it uses less digits than its factorization.

28318302012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161 (or 1159 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

Adding to 28318302012 its reverse (21020381382), we get a palindrome (49338683394).

The spelling of 28318302012 in words is "twenty-eight billion, three hundred eighteen million, three hundred two thousand, twelve".