13720034 has 8 divisors (see below), whose sum is σ = 20666880. Its totient is φ = 6831076.

The previous prime is 13720001. The next prime is 13720039. The reversal of 13720034 is 43002731.

13720034 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×13720034² = 376478665922312, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13719988 and 13720015.

It is not an unprimeable number, because it can be changed into a prime (13720039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13874 + ... + 14829.

It is an arithmetic number, because the mean of its divisors is an integer number (2583360).

Almost surely, 2^13720034 is an apocalyptic number.

13720034 is a deficient number, since it is larger than the sum of its proper divisors (6946846).

13720034 is a wasteful number, since it uses less digits than its factorization.

13720034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28944.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 13720034 is about 3704.0564250562. The cubic root of 13720034 is about 239.3968302869.

Adding to 13720034 its reverse (43002731), we get a palindrome (56722765).

The spelling of 13720034 in words is "thirteen million, seven hundred twenty thousand, thirty-four".