28760391520 has 96 divisors (see below), whose sum is σ = 77995830528. Its totient is φ = 9817179648.

The previous prime is 28760391493. The next prime is 28760391547. The reversal of 28760391520 is 2519306782.

It is an interprime number because it is at equal distance from previous prime (28760391493) and next prime (28760391547).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197679 + ... + 310801.

It is an arithmetic number, because the mean of its divisors is an integer number (812456568).

Almost surely, 2^28760391520 is an apocalyptic number.

28760391520 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 28760391520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38997915264).

28760391520 is an abundant number, since it is smaller than the sum of its proper divisors (49235439008).

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

28760391520 is a wasteful number, since it uses less digits than its factorization.

28760391520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113372 (or 113364 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 28760391520 in words is "twenty-eight billion, seven hundred sixty million, three hundred ninety-one thousand, five hundred twenty".