28929880320 has 864 divisors, whose sum is σ = 111568060800. Its totient is φ = 6358302720.

The previous prime is 28929880303. The next prime is 28929880361. The reversal of 28929880320 is 2308892982.

It is a congruent number.

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, 256016584 + ... + 256016696.

It is an arithmetic number, because the mean of its divisors is an integer number (129129700).

Almost surely, 2^28929880320 is an apocalyptic number.

28929880320 is a gapful number since it is divisible by the number (20) 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 28929880320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55784030400).

28929880320 is an abundant number, since it is smaller than the sum of its proper divisors (82638180480).

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

28929880320 is a wasteful number, since it uses less digits than its factorization.

28929880320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 51.

The spelling of 28929880320 in words is "twenty-eight billion, nine hundred twenty-nine million, eight hundred eighty thousand, three hundred twenty".