13820885 has 32 divisors (see below), whose sum is σ = 19461120. Its totient is φ = 9357120.

The previous prime is 13820857. The next prime is 13820887. The reversal of 13820885 is 58802831.

It is not a de Polignac number, because 13820885 - 2⁸ = 13820629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13820887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 445820 + ... + 445850.

It is an arithmetic number, because the mean of its divisors is an integer number (608160).

Almost surely, 2^13820885 is an apocalyptic number.

It is an amenable number.

13820885 is a deficient number, since it is larger than the sum of its proper divisors (5640235).

13820885 is an equidigital number, since it uses as much as digits as its factorization.

13820885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106 (or 68 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 13820885 is about 3717.6450879555. The cubic root of 13820885 is about 239.9819720255.

The spelling of 13820885 in words is "thirteen million, eight hundred twenty thousand, eight hundred eighty-five".