13720955 has 16 divisors (see below), whose sum is σ = 17521920. Its totient is φ = 10278912.

The previous prime is 13720933. The next prime is 13721033. The reversal of 13720955 is 55902731.

It is a cyclic number.

It is not a de Polignac number, because 13720955 - 2⁶ = 13720891 is a prime.

It is a super-2 number, since 2×13720955² = 376529212224050, which contains 22 as substring.

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, 28406 + ... + 28884.

It is an arithmetic number, because the mean of its divisors is an integer number (1095120).

Almost surely, 2^13720955 is an apocalyptic number.

13720955 is a deficient number, since it is larger than the sum of its proper divisors (3800965).

13720955 is a wasteful number, since it uses less digits than its factorization.

13720955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838.

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 13720955 is about 3704.1807461300. The cubic root of 13720955 is about 239.4021869196.

The spelling of 13720955 in words is "thirteen million, seven hundred twenty thousand, nine hundred fifty-five".