28398647875248 has 360 divisors, whose sum is σ = 99737978959008. Its totient is φ = 7492522512384.

The previous prime is 28398647875243. The next prime is 28398647875271. The reversal of 28398647875248 is 84257874689382.

28398647875248 is a `hidden beast` number, since 2 + 8 + 3 + 9 + 8 + 6 + 4 + 7 + 87 + 524 + 8 = 666.

It is a super-2 number, since 2×28398647875248² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28398647875243) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4123965 + ... + 8590947.

Almost surely, 2^{28398647875248} is an apocalyptic number.

28398647875248 is a gapful number since it is divisible by the number (28) 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 28398647875248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49868989479504).

28398647875248 is an abundant number, since it is smaller than the sum of its proper divisors (71339331083760).

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

28398647875248 is a wasteful number, since it uses less digits than its factorization.

28398647875248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4467081 (or 4467065 counting only the distinct ones).

The product of its digits is 10404495360, while the sum is 81.

The spelling of 28398647875248 in words is "twenty-eight trillion, three hundred ninety-eight billion, six hundred forty-seven million, eight hundred seventy-five thousand, two hundred forty-eight".