13721454 has 32 divisors (see below), whose sum is σ = 30800640. Its totient is φ = 4527576.

The previous prime is 13721447. The next prime is 13721459. The reversal of 13721454 is 45412731.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13721459) 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, 4329 + ... + 6795.

It is an arithmetic number, because the mean of its divisors is an integer number (962520).

Almost surely, 2^13721454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13721454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15400320).

13721454 is an abundant number, since it is smaller than the sum of its proper divisors (17079186).

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

13721454 is a wasteful number, since it uses less digits than its factorization.

13721454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581 (or 2575 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 13721454 is about 3704.2481018420. The cubic root of 13721454 is about 239.4050890558.

The spelling of 13721454 in words is "thirteen million, seven hundred twenty-one thousand, four hundred fifty-four".