13928137 has 4 divisors (see below), whose sum is σ = 13935616. Its totient is φ = 13920660.

The previous prime is 13928111. The next prime is 13928143. The reversal of 13928137 is 73182931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 73182931 = 797 ⋅91823.

It is a cyclic number.

It is not a de Polignac number, because 13928137 - 2¹¹ = 13926089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13928177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1528 + ... + 5494.

It is an arithmetic number, because the mean of its divisors is an integer number (3483904).

Almost surely, 2^13928137 is an apocalyptic number.

It is an amenable number.

13928137 is a deficient number, since it is larger than the sum of its proper divisors (7479).

13928137 is an equidigital number, since it uses as much as digits as its factorization.

13928137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7478.

The product of its digits is 9072, while the sum is 34.

The square root of 13928137 is about 3732.0419343839. The cubic root of 13928137 is about 240.6011377248.

The spelling of 13928137 in words is "thirteen million, nine hundred twenty-eight thousand, one hundred thirty-seven".