28741257216 has 480 divisors, whose sum is σ = 100177197120. Its totient is φ = 8039596032.

The previous prime is 28741257197. The next prime is 28741257253. The reversal of 28741257216 is 61275214782.

28741257216 is a `hidden beast` number, since 2 + 8 + 74 + 1 + 2 + 572 + 1 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 61544215 + ... + 61544681.

It is an arithmetic number, because the mean of its divisors is an integer number (208702494).

Almost surely, 2^28741257216 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 28741257216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50088598560).

28741257216 is an abundant number, since it is smaller than the sum of its proper divisors (71435939904).

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

28741257216 is an equidigital number, since it uses as much as digits as its factorization.

28741257216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561 (or 532 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The spelling of 28741257216 in words is "twenty-eight billion, seven hundred forty-one million, two hundred fifty-seven thousand, two hundred sixteen".