28270857216 has 176 divisors, whose sum is σ = 88896788480. Its totient is φ = 7816642560.

The previous prime is 28270857211. The next prime is 28270857221. The reversal of 28270857216 is 61275807282.

It is an interprime number because it is at equal distance from previous prime (28270857211) and next prime (28270857221).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (28270857211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 645420 + ... + 687828.

Almost surely, 2^28270857216 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 28270857216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44448394240).

28270857216 is an abundant number, since it is smaller than the sum of its proper divisors (60625931264).

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

28270857216 is a wasteful number, since it uses less digits than its factorization.

28270857216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42470 (or 42452 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 48.

The spelling of 28270857216 in words is "twenty-eight billion, two hundred seventy million, eight hundred fifty-seven thousand, two hundred sixteen".