28341648520 has 32 divisors (see below), whose sum is σ = 65324047320. Its totient is φ = 11060154880.

The previous prime is 28341648497. The next prime is 28341648527. The reversal of 28341648520 is 2584614382.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7067092356 + 21274556164 = 84066^2 + 145858^2 .

It is not an unprimeable number, because it can be changed into a prime (28341648527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8639107 + ... + 8642386.

Almost surely, 2^28341648520 is an apocalyptic number.

28341648520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28341648520 is an abundant number, since it is smaller than the sum of its proper divisors (36982398800).

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

28341648520 is a wasteful number, since it uses less digits than its factorization.

28341648520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17281545 (or 17281541 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 43.

The spelling of 28341648520 in words is "twenty-eight billion, three hundred forty-one million, six hundred forty-eight thousand, five hundred twenty".