13591250928 has 40 divisors (see below), whose sum is σ = 39011925200. Its totient is φ = 4530416832.

The previous prime is 13591250923. The next prime is 13591250947. The reversal of 13591250928 is 82905219531.

13591250928 is a `hidden beast` number, since 1 + 3 + 591 + 2 + 50 + 9 + 2 + 8 = 666.

It is a super-2 number, since 2×13591250928² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13591250923) 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, 15730183 + ... + 15731046.

It is an arithmetic number, because the mean of its divisors is an integer number (975298130).

Almost surely, 2^13591250928 is an apocalyptic number.

13591250928 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13591250928 is an abundant number, since it is smaller than the sum of its proper divisors (25420674272).

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

13591250928 is a wasteful number, since it uses less digits than its factorization.

13591250928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31461246 (or 31461234 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 45.

The spelling of 13591250928 in words is "thirteen billion, five hundred ninety-one million, two hundred fifty thousand, nine hundred twenty-eight".