28147460320 has 384 divisors, whose sum is σ = 87657292800. Its totient is φ = 8305016832.

The previous prime is 28147460317. The next prime is 28147460357. The reversal of 28147460320 is 2306474182.

It is a self number, because there is not a number n which added to its sum of digits gives 28147460320.

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, 10489699 + ... + 10492381.

It is an arithmetic number, because the mean of its divisors is an integer number (228274200).

Almost surely, 2^28147460320 is an apocalyptic number.

28147460320 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 28147460320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43828646400).

28147460320 is an abundant number, since it is smaller than the sum of its proper divisors (59509832480).

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

28147460320 is a wasteful number, since it uses less digits than its factorization.

28147460320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2770 (or 2762 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 37.

The spelling of 28147460320 in words is "twenty-eight billion, one hundred forty-seven million, four hundred sixty thousand, three hundred twenty".