13878435 has 16 divisors (see below), whose sum is σ = 22415616. Its totient is φ = 7331808.

The previous prime is 13878427. The next prime is 13878439. The reversal of 13878435 is 53487831.

13878435 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13878435 - 2³ = 13878427 is a prime.

It is a super-2 number, since 2×13878435² = 385221916098450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13878393 and 13878402.

It is not an unprimeable number, because it can be changed into a prime (13878439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2719 + ... + 5928.

It is an arithmetic number, because the mean of its divisors is an integer number (1400976).

Almost surely, 2^13878435 is an apocalyptic number.

13878435 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13878435 is a deficient number, since it is larger than the sum of its proper divisors (8537181).

13878435 is a wasteful number, since it uses less digits than its factorization.

13878435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8762.

The product of its digits is 80640, while the sum is 39.

The square root of 13878435 is about 3725.3771621139. The cubic root of 13878435 is about 240.3146047802.

The spelling of 13878435 in words is "thirteen million, eight hundred seventy-eight thousand, four hundred thirty-five".