13598416728 has 80 divisors (see below), whose sum is σ = 41018041680. Its totient is φ = 4184125632.

The previous prime is 13598416721. The next prime is 13598416729. The reversal of 13598416728 is 82761489531.

13598416728 is a `hidden beast` number, since 1 + 3 + 598 + 41 + 6 + 7 + 2 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13598416721) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 798700 + ... + 815547.

It is an arithmetic number, because the mean of its divisors is an integer number (512725521).

Almost surely, 2^13598416728 is an apocalyptic number.

13598416728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13598416728 is an abundant number, since it is smaller than the sum of its proper divisors (27419624952).

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

13598416728 is a wasteful number, since it uses less digits than its factorization.

13598416728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614278 (or 1614265 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The spelling of 13598416728 in words is "thirteen billion, five hundred ninety-eight million, four hundred sixteen thousand, seven hundred twenty-eight".