28727316112 has 80 divisors (see below), whose sum is σ = 63421333632. Its totient is φ = 12477864960.

The previous prime is 28727316109. The next prime is 28727316139. The reversal of 28727316112 is 21161372782.

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, 5004508 + ... + 5010244.

Almost surely, 2^28727316112 is an apocalyptic number.

28727316112 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 28727316112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31710666816).

28727316112 is an abundant number, since it is smaller than the sum of its proper divisors (34694017520).

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

28727316112 is a wasteful number, since it uses less digits than its factorization.

28727316112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7016 (or 7010 counting only the distinct ones).

The product of its digits is 56448, while the sum is 40.

Adding to 28727316112 its reverse (21161372782), we get a palindrome (49888688894).

The spelling of 28727316112 in words is "twenty-eight billion, seven hundred twenty-seven million, three hundred sixteen thousand, one hundred twelve".