28734482816 has 64 divisors (see below), whose sum is σ = 61684459200. Its totient is φ = 13254205440.

The previous prime is 28734482801. The next prime is 28734482827. The reversal of 28734482816 is 61828443782.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3538601 + ... + 3546711.

It is an arithmetic number, because the mean of its divisors is an integer number (963819675).

Almost surely, 2^28734482816 is an apocalyptic number.

28734482816 is a gapful number since it is divisible by the number (26) 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 28734482816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30842229600).

28734482816 is an abundant number, since it is smaller than the sum of its proper divisors (32949976384).

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

28734482816 is a wasteful number, since it uses less digits than its factorization.

28734482816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10267 (or 10255 counting only the distinct ones).

The product of its digits is 4128768, while the sum is 53.

The spelling of 28734482816 in words is "twenty-eight billion, seven hundred thirty-four million, four hundred eighty-two thousand, eight hundred sixteen".