13721741 has 8 divisors (see below), whose sum is σ = 15012864. Its totient is φ = 12437920.

The previous prime is 13721723. The next prime is 13721761. The reversal of 13721741 is 14712731.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-13721741 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13721741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13721761) 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, 2585 + ... + 5841.

It is an arithmetic number, because the mean of its divisors is an integer number (1876608).

Almost surely, 2^13721741 is an apocalyptic number.

13721741 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13721741 is a deficient number, since it is larger than the sum of its proper divisors (1291123).

13721741 is a wasteful number, since it uses less digits than its factorization.

13721741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3651.

The product of its digits is 1176, while the sum is 26.

The square root of 13721741 is about 3704.2868409452. The cubic root of 13721741 is about 239.4067581885.

It can be divided in two parts, 1372 and 1741, that added together give a palindrome (3113).

The spelling of 13721741 in words is "thirteen million, seven hundred twenty-one thousand, seven hundred forty-one".