28649407488 has 352 divisors, whose sum is σ = 91696429440. Its totient is φ = 7856455680.

The previous prime is 28649407463. The next prime is 28649407489. The reversal of 28649407488 is 88470494682.

It is not an unprimeable number, because it can be changed into a prime (28649407489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12898218 + ... + 12900438.

It is an arithmetic number, because the mean of its divisors is an integer number (260501220).

Almost surely, 2^28649407488 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 28649407488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45848214720).

28649407488 is an abundant number, since it is smaller than the sum of its proper divisors (63047021952).

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

28649407488 is a wasteful number, since it uses less digits than its factorization.

28649407488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2293 (or 2275 counting only the distinct ones).

The product of its (nonzero) digits is 24772608, while the sum is 60.

The spelling of 28649407488 in words is "twenty-eight billion, six hundred forty-nine million, four hundred seven thousand, four hundred eighty-eight".