13904145 has 24 divisors (see below), whose sum is σ = 24216192. Its totient is φ = 7380000.

The previous prime is 13904141. The next prime is 13904153. The reversal of 13904145 is 54140931.

13904145 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13904145 - 2² = 13904141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13904141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10680 + ... + 11910.

It is an arithmetic number, because the mean of its divisors is an integer number (1009008).

Almost surely, 2^13904145 is an apocalyptic number.

13904145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13904145 is a deficient number, since it is larger than the sum of its proper divisors (10312047).

13904145 is a wasteful number, since it uses less digits than its factorization.

13904145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493 (or 1490 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 13904145 is about 3728.8262228213. The cubic root of 13904145 is about 240.4629086575.

The spelling of 13904145 in words is "thirteen million, nine hundred four thousand, one hundred forty-five".