13721712 has 40 divisors (see below), whose sum is σ = 35581056. Its totient is φ = 4556736.

The previous prime is 13721693. The next prime is 13721713. The reversal of 13721712 is 21712731.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13721713) 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, 23083 + ... + 23669.

Almost surely, 2^13721712 is an apocalyptic number.

13721712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13721712 is an abundant number, since it is smaller than the sum of its proper divisors (21859344).

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

13721712 is a wasteful number, since it uses less digits than its factorization.

13721712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085 (or 1079 counting only the distinct ones).

The product of its digits is 588, while the sum is 24.

The square root of 13721712 is about 3704.2829265595. The cubic root of 13721712 is about 239.4065895316.

The spelling of 13721712 in words is "thirteen million, seven hundred twenty-one thousand, seven hundred twelve".