28330015840 has 192 divisors, whose sum is σ = 82366502400. Its totient is φ = 8986484736.

The previous prime is 28330015817. The next prime is 28330015933. The reversal of 28330015840 is 4851003382.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 28330015796 and 28330015805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1110751 + ... + 1135969.

It is an arithmetic number, because the mean of its divisors is an integer number (428992200).

Almost surely, 2^28330015840 is an apocalyptic number.

28330015840 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 28330015840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41183251200).

28330015840 is an abundant number, since it is smaller than the sum of its proper divisors (54036486560).

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

28330015840 is a wasteful number, since it uses less digits than its factorization.

28330015840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25317 (or 25309 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The spelling of 28330015840 in words is "twenty-eight billion, three hundred thirty million, fifteen thousand, eight hundred forty".