28031455475712 has 720 divisors, whose sum is σ = 91389383205120. Its totient is φ = 8556062441472.

The previous prime is 28031455475689. The next prime is 28031455475741. The reversal of 28031455475712 is 21757455413082.

28031455475712 is a `hidden beast` number, since 2 + 8 + 0 + 3 + 1 + 4 + 554 + 75 + 7 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 3560450208 + ... + 3560458080.

It is an arithmetic number, because the mean of its divisors is an integer number (126929698896).

Almost surely, 2^{28031455475712} 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 28031455475712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45694691602560).

28031455475712 is an abundant number, since it is smaller than the sum of its proper divisors (63357927729408).

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

28031455475712 is a wasteful number, since it uses less digits than its factorization.

28031455475712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8060 (or 8018 counting only the distinct ones).

The product of its (nonzero) digits is 9408000, while the sum is 54.

The spelling of 28031455475712 in words is "twenty-eight trillion, thirty-one billion, four hundred fifty-five million, four hundred seventy-five thousand, seven hundred twelve".