28001481702330 has 128 divisors (see below), whose sum is σ = 72187460236800. Its totient is φ = 6926098350080.

The previous prime is 28001481702329. The next prime is 28001481702349. The reversal of 28001481702330 is 3320718410082.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 92147602 + ... + 92450978.

It is an arithmetic number, because the mean of its divisors is an integer number (563964533100).

Almost surely, 2^{28001481702330} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28001481702330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36093730118400).

28001481702330 is an abundant number, since it is smaller than the sum of its proper divisors (44185978534470).

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

28001481702330 is a wasteful number, since it uses less digits than its factorization.

28001481702330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306024.

The product of its (nonzero) digits is 64512, while the sum is 39.

The spelling of 28001481702330 in words is "twenty-eight trillion, one billion, four hundred eighty-one million, seven hundred two thousand, three hundred thirty".