13878342 has 12 divisors (see below), whose sum is σ = 30069780. Its totient is φ = 4626108.

The previous prime is 13878317. The next prime is 13878349. The reversal of 13878342 is 24387831.

It is a junction number, because it is equal to n+sod(n) for n = 13878297 and 13878306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13878349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 385492 + ... + 385527.

It is an arithmetic number, because the mean of its divisors is an integer number (2505815).

Almost surely, 2^13878342 is an apocalyptic number.

13878342 is an abundant number, since it is smaller than the sum of its proper divisors (16191438).

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

13878342 is a wasteful number, since it uses less digits than its factorization.

13878342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771027 (or 771024 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 13878342 is about 3725.3646801354. The cubic root of 13878342 is about 240.3140679928.

The spelling of 13878342 in words is "thirteen million, eight hundred seventy-eight thousand, three hundred forty-two".