28448775936 has 864 divisors, whose sum is σ = 106618800960. Its totient is φ = 7524679680.

The previous prime is 28448775931. The next prime is 28448775941. The reversal of 28448775936 is 63957784482.

28448775936 is a `hidden beast` number, since 2 + 84 + 487 + 75 + 9 + 3 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (28448775931) and next prime (28448775941).

It is a tau number, because it is divible by the number of its divisors (864).

It is a Harshad number since it is a multiple of its sum of digits (63).

Its product of digits (81285120) is a multiple of the sum of its prime divisors (90).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28448775931) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 466373346 + ... + 466373406.

It is an arithmetic number, because the mean of its divisors is an integer number (123401390).

Almost surely, 2^28448775936 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 28448775936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53309400480).

28448775936 is an abundant number, since it is smaller than the sum of its proper divisors (78170025024).

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

28448775936 is an frugal number, since it uses more digits than its factorization.

28448775936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 90 counting only the distinct ones).

The product of its digits is 81285120, while the sum is 63.

The spelling of 28448775936 in words is "twenty-eight billion, four hundred forty-eight million, seven hundred seventy-five thousand, nine hundred thirty-six".