28407839208 has 128 divisors (see below), whose sum is σ = 85494528000. Its totient is φ = 7684174080.

The previous prime is 28407839203. The next prime is 28407839219. The reversal of 28407839208 is 80293870482.

It is a super-3 number, since 3×28407839208³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (28407839203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8900893 + ... + 8904083.

It is an arithmetic number, because the mean of its divisors is an integer number (667926000).

Almost surely, 2^28407839208 is an apocalyptic number.

28407839208 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 28407839208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42747264000).

28407839208 is an abundant number, since it is smaller than the sum of its proper divisors (57086688792).

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

28407839208 is a wasteful number, since it uses less digits than its factorization.

28407839208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6015 (or 6011 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 28407839208 in words is "twenty-eight billion, four hundred seven million, eight hundred thirty-nine thousand, two hundred eight".