13103992 has 32 divisors (see below), whose sum is σ = 27434880. Its totient is φ = 5816160.

The previous prime is 13103971. The next prime is 13103999. The reversal of 13103992 is 29930131.

It is a self number, because there is not a number n which added to its sum of digits gives 13103992.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13103999) 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, 2053 + ... + 5515.

It is an arithmetic number, because the mean of its divisors is an integer number (857340).

Almost surely, 2^13103992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13103992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13717440).

13103992 is an abundant number, since it is smaller than the sum of its proper divisors (14330888).

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

13103992 is a wasteful number, since it uses less digits than its factorization.

13103992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3523 (or 3519 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 13103992 is about 3619.9436459702. The cubic root of 13103992 is about 235.7587787102.

It can be divided in two parts, 131039 and 92, that added together give a palindrome (131131).

The spelling of 13103992 in words is "thirteen million, one hundred three thousand, nine hundred ninety-two".