281986127472 has 240 divisors, whose sum is σ = 888641828640. Its totient is φ = 76722315264.

The previous prime is 281986127447. The next prime is 281986127473. The reversal of 281986127472 is 274721689182.

It is a super-2 number, since 2×281986127472² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281986127473) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4950868 + ... + 5007500.

It is an arithmetic number, because the mean of its divisors is an integer number (3702674286).

Almost surely, 2^281986127472 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 281986127472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (444320914320).

281986127472 is an abundant number, since it is smaller than the sum of its proper divisors (606655701168).

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

281986127472 is a wasteful number, since it uses less digits than its factorization.

281986127472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56760 (or 56747 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 57.

The spelling of 281986127472 in words is "two hundred eighty-one billion, nine hundred eighty-six million, one hundred twenty-seven thousand, four hundred seventy-two".