28514685312 has 192 divisors, whose sum is σ = 85495388160. Its totient is φ = 9459970560.

The previous prime is 28514685307. The next prime is 28514685349. The reversal of 28514685312 is 21358641582.

28514685312 is a `hidden beast` number, since 2 + 8 + 51 + 4 + 68 + 531 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-4 number, since 4×28514685312⁴ (a number of 43 digits) contains 4444 as substring.

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, 6934137 + ... + 6938247.

It is an arithmetic number, because the mean of its divisors is an integer number (445288480).

Almost surely, 2^28514685312 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 28514685312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42747694080).

28514685312 is an abundant number, since it is smaller than the sum of its proper divisors (56980702848).

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

28514685312 is an equidigital number, since it uses as much as digits as its factorization.

28514685312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4363 (or 4339 counting only the distinct ones).

The product of its digits is 460800, while the sum is 45.

The spelling of 28514685312 in words is "twenty-eight billion, five hundred fourteen million, six hundred eighty-five thousand, three hundred twelve".