28100063488 has 72 divisors (see below), whose sum is σ = 64140818112. Its totient is φ = 12035831808.

The previous prime is 28100063483. The next prime is 28100063489. The reversal of 28100063488 is 88436000182.

It is a super-2 number, since 2×28100063488² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28100063488.

It is not an unprimeable number, because it can be changed into a prime (28100063483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4059006 + ... + 4065922.

It is an arithmetic number, because the mean of its divisors is an integer number (890844696).

Almost surely, 2^28100063488 is an apocalyptic number.

28100063488 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 28100063488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32070409056).

28100063488 is an abundant number, since it is smaller than the sum of its proper divisors (36040754624).

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

28100063488 is an equidigital number, since it uses as much as digits as its factorization.

28100063488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9207 (or 9193 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The spelling of 28100063488 in words is "twenty-eight billion, one hundred million, sixty-three thousand, four hundred eighty-eight".