13887045 has 40 divisors (see below), whose sum is σ = 26371224. Its totient is φ = 6967296.

The previous prime is 13887019. The next prime is 13887061. The reversal of 13887045 is 54078831.

It can be written as a sum of positive squares in 4 ways, for example, as 5225796 + 8661249 = 2286^2 + 2943^2 .

It is not a de Polignac number, because 13887045 - 2⁶ = 13886981 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5877 + ... + 7893.

Almost surely, 2^13887045 is an apocalyptic number.

13887045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13887045 is a deficient number, since it is larger than the sum of its proper divisors (12484179).

13887045 is a wasteful number, since it uses less digits than its factorization.

13887045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2051 (or 2042 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 13887045 is about 3726.5325706345. The cubic root of 13887045 is about 240.3642905220.

The spelling of 13887045 in words is "thirteen million, eight hundred eighty-seven thousand, forty-five".