28347550320 has 320 divisors, whose sum is σ = 95328005760. Its totient is φ = 6941835264.

The previous prime is 28347550313. The next prime is 28347550349. The reversal of 28347550320 is 2305574382.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 72872686 + ... + 72873074.

It is an arithmetic number, because the mean of its divisors is an integer number (297900018).

Almost surely, 2^28347550320 is an apocalyptic number.

28347550320 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 28347550320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47664002880).

28347550320 is an abundant number, since it is smaller than the sum of its proper divisors (66980455440).

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

28347550320 is a wasteful number, since it uses less digits than its factorization.

28347550320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812 (or 806 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 39.

The spelling of 28347550320 in words is "twenty-eight billion, three hundred forty-seven million, five hundred fifty thousand, three hundred twenty".