13721486 has 16 divisors (see below), whose sum is σ = 20988720. Its totient is φ = 6726720.

The previous prime is 13721479. The next prime is 13721497. The reversal of 13721486 is 68412731.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27701 + ... + 28191.

It is an arithmetic number, because the mean of its divisors is an integer number (1311795).

Almost surely, 2^13721486 is an apocalyptic number.

13721486 is a deficient number, since it is larger than the sum of its proper divisors (7267234).

13721486 is a wasteful number, since it uses less digits than its factorization.

13721486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739.

The product of its digits is 8064, while the sum is 32.

The square root of 13721486 is about 3704.2524212046. The cubic root of 13721486 is about 239.4052751624.

The spelling of 13721486 in words is "thirteen million, seven hundred twenty-one thousand, four hundred eighty-six".