28998552408 has 96 divisors (see below), whose sum is σ = 84568665600. Its totient is φ = 8262101568.

The previous prime is 28998552403. The next prime is 28998552413. The reversal of 28998552408 is 80425589982.

It is an interprime number because it is at equal distance from previous prime (28998552403) and next prime (28998552413).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28998552403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 387841 + ... + 456527.

It is an arithmetic number, because the mean of its divisors is an integer number (880923600).

Almost surely, 2^28998552408 is an apocalyptic number.

28998552408 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 28998552408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42284332800).

28998552408 is an abundant number, since it is smaller than the sum of its proper divisors (55570113192).

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

28998552408 is a wasteful number, since it uses less digits than its factorization.

28998552408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69069 (or 69058 counting only the distinct ones).

The product of its (nonzero) digits is 16588800, while the sum is 60.

The spelling of 28998552408 in words is "twenty-eight billion, nine hundred ninety-eight million, five hundred fifty-two thousand, four hundred eight".