13875858 has 12 divisors (see below), whose sum is σ = 30064398. Its totient is φ = 4625280.

The previous prime is 13875847. The next prime is 13875881. The reversal of 13875858 is 85857831.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13860729 + 15129 = 3723^2 + 123^2 .

It is a zygodrome in base 3.

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 5 ways as a sum of consecutive naturals, for example, 385423 + ... + 385458.

Almost surely, 2^13875858 is an apocalyptic number.

13875858 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13875858 is an abundant number, since it is smaller than the sum of its proper divisors (16188540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13875858 is a wasteful number, since it uses less digits than its factorization.

13875858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770889 (or 770886 counting only the distinct ones).

The product of its digits is 268800, while the sum is 45.

The square root of 13875858 is about 3725.0312750365. The cubic root of 13875858 is about 240.2997296863.

The spelling of 13875858 in words is "thirteen million, eight hundred seventy-five thousand, eight hundred fifty-eight".