13878022 has 4 divisors (see below), whose sum is σ = 20817036. Its totient is φ = 6939010.

The previous prime is 13878017. The next prime is 13878023. The reversal of 13878022 is 22087831.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13878023) 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 as a sum of consecutive naturals, namely, 3469504 + ... + 3469507.

It is an arithmetic number, because the mean of its divisors is an integer number (5204259).

Almost surely, 2^13878022 is an apocalyptic number.

13878022 is a deficient number, since it is larger than the sum of its proper divisors (6939014).

13878022 is an equidigital number, since it uses as much as digits as its factorization.

13878022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6939013.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 13878022 is about 3725.3217310724. The cubic root of 13878022 is about 240.3122209640.

It can be divided in two parts, 1387 and 8022, that added together give a square (9409 = 97²).

The spelling of 13878022 in words is "thirteen million, eight hundred seventy-eight thousand, twenty-two".