28052045367840 has 576 divisors, whose sum is σ = 107328087580896. Its totient is φ = 6626447917056.

The previous prime is 28052045367823. The next prime is 28052045367883. The reversal of 28052045367840 is 4876354025082.

28052045367840 is a `hidden beast` number, since 2 + 8 + 0 + 5 + 20 + 4 + 536 + 7 + 84 + 0 = 666.

It can be written as a sum of positive squares in 16 ways, for example, as 819553605264 + 27232491762576 = 905292^2 + 5218476^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 50285322 + ... + 50840118.

Almost surely, 2^{28052045367840} is an apocalyptic number.

28052045367840 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 28052045367840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53664043790448).

28052045367840 is an abundant number, since it is smaller than the sum of its proper divisors (79276042213056).

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

28052045367840 is a wasteful number, since it uses less digits than its factorization.

28052045367840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554941 (or 554930 counting only the distinct ones).

The product of its (nonzero) digits is 12902400, while the sum is 54.

The spelling of 28052045367840 in words is "twenty-eight trillion, fifty-two billion, forty-five million, three hundred sixty-seven thousand, eight hundred forty".