13728324020 has 12 divisors (see below), whose sum is σ = 28829480484. Its totient is φ = 5491329600.

The previous prime is 13728324013. The next prime is 13728324079. The reversal of 13728324020 is 2042382731.

It can be written as a sum of positive squares in 2 ways, for example, as 6939223204 + 6789100816 = 83302^2 + 82396^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343208081 + ... + 343208120.

It is an arithmetic number, because the mean of its divisors is an integer number (2402456707).

Almost surely, 2^13728324020 is an apocalyptic number.

13728324020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13728324020 is an abundant number, since it is smaller than the sum of its proper divisors (15101156464).

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

13728324020 is a wasteful number, since it uses less digits than its factorization.

13728324020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686416210 (or 686416208 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The spelling of 13728324020 in words is "thirteen billion, seven hundred twenty-eight million, three hundred twenty-four thousand, twenty".