13720535 has 16 divisors (see below), whose sum is σ = 17288640. Its totient is φ = 10433280.

The previous prime is 13720523. The next prime is 13720543. The reversal of 13720535 is 53502731.

It is not a de Polignac number, because 13720535 - 2⁴ = 13720519 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26075 + ... + 26595.

It is an arithmetic number, because the mean of its divisors is an integer number (1080540).

Almost surely, 2^13720535 is an apocalyptic number.

13720535 is a deficient number, since it is larger than the sum of its proper divisors (3568105).

13720535 is a wasteful number, since it uses less digits than its factorization.

13720535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778.

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 13720535 is about 3704.1240529982. The cubic root of 13720535 is about 239.3997441852.

The spelling of 13720535 in words is "thirteen million, seven hundred twenty thousand, five hundred thirty-five".