13381634 has 16 divisors (see below), whose sum is σ = 23156928. Its totient is φ = 5680752.

The previous prime is 13381633. The next prime is 13381639. The reversal of 13381634 is 43618331.

13381634 = 2111² + 2112² + 2113².

It is a junction number, because it is equal to n+sod(n) for n = 13381597 and 13381606.

It is not an unprimeable number, because it can be changed into a prime (13381633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2969 + ... + 5964.

It is an arithmetic number, because the mean of its divisors is an integer number (1447308).

Almost surely, 2^13381634 is an apocalyptic number.

13381634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

13381634 is a deficient number, since it is larger than the sum of its proper divisors (9775294).

13381634 is a wasteful number, since it uses less digits than its factorization.

13381634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9049.

The product of its digits is 5184, while the sum is 29.

The square root of 13381634 is about 3658.0915789521. The cubic root of 13381634 is about 237.4122091037.

Adding to 13381634 its reverse (43618331), we get a palindrome (56999965).

The spelling of 13381634 in words is "thirteen million, three hundred eighty-one thousand, six hundred thirty-four".