13723140 has 48 divisors (see below), whose sum is σ = 38586240. Its totient is φ = 3644160.

The previous prime is 13723139. The next prime is 13723147. The reversal of 13723140 is 4132731.

It is not an unprimeable number, because it can be changed into a prime (13723147) 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, 26080 + ... + 26600.

It is an arithmetic number, because the mean of its divisors is an integer number (803880).

Almost surely, 2^13723140 is an apocalyptic number.

13723140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13723140 is an abundant number, since it is smaller than the sum of its proper divisors (24863100).

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

13723140 is a wasteful number, since it uses less digits than its factorization.

13723140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972 (or 970 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 13723140 is about 3704.4756714007. The cubic root of 13723140 is about 239.4148941501.

Adding to 13723140 its reverse (4132731), we get a palindrome (17855871).

The spelling of 13723140 in words is "thirteen million, seven hundred twenty-three thousand, one hundred forty".