28680139152 has 480 divisors, whose sum is σ = 102910080000. Its totient is φ = 7548194304.

The previous prime is 28680139141. The next prime is 28680139261. The reversal of 28680139152 is 25193108682.

It is a junction number, because it is equal to n+sod(n) for n = 28680139098 and 28680139107.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 19132099 + ... + 19133597.

It is an arithmetic number, because the mean of its divisors is an integer number (214396000).

Almost surely, 2^28680139152 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 28680139152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51455040000).

28680139152 is an abundant number, since it is smaller than the sum of its proper divisors (74229940848).

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

28680139152 is a wasteful number, since it uses less digits than its factorization.

28680139152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585 (or 1567 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 28680139152 in words is "twenty-eight billion, six hundred eighty million, one hundred thirty-nine thousand, one hundred fifty-two".