13928831 has 16 divisors (see below), whose sum is σ = 17116416. Its totient is φ = 11062656.

The previous prime is 13928791. The next prime is 13928833. The reversal of 13928831 is 13882931.

It is a cyclic number.

It is not a de Polignac number, because 13928831 - 2¹⁰ = 13927807 is a prime.

It is a super-2 number, since 2×13928831² = 388024666053122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13928791 and 13928800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13928833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7100 + ... + 8846.

It is an arithmetic number, because the mean of its divisors is an integer number (1069776).

Almost surely, 2^13928831 is an apocalyptic number.

13928831 is a deficient number, since it is larger than the sum of its proper divisors (3187585).

13928831 is a wasteful number, since it uses less digits than its factorization.

13928831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1838.

The product of its digits is 10368, while the sum is 35.

The square root of 13928831 is about 3732.1349118166. The cubic root of 13928831 is about 240.6051338184.

The spelling of 13928831 in words is "thirteen million, nine hundred twenty-eight thousand, eight hundred thirty-one".