28013841285120 has 408 divisors, whose sum is σ = 100246942753152. Its totient is φ = 7229354803200.

The previous prime is 28013841285083. The next prime is 28013841285139. The reversal of 28013841285120 is 2158214831082.

28013841285120 is a `hidden beast` number, since 2 + 8 + 0 + 1 + 3 + 8 + 4 + 128 + 512 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91269510 + ... + 91575930.

Almost surely, 2^{28013841285120} is an apocalyptic number.

28013841285120 is a gapful number since it is divisible by the number (20) 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 28013841285120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50123471376576).

28013841285120 is an abundant number, since it is smaller than the sum of its proper divisors (72233101468032).

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

28013841285120 is an equidigital number, since it uses as much as digits as its factorization.

28013841285120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306495 (or 306462 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 45.

The spelling of 28013841285120 in words is "twenty-eight trillion, thirteen billion, eight hundred forty-one million, two hundred eighty-five thousand, one hundred twenty".