13420385 has 24 divisors (see below), whose sum is σ = 18512064. Its totient is φ = 9245280.

The previous prime is 13420331. The next prime is 13420387. The reversal of 13420385 is 58302431.

13420385 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 13420385 - 2⁶ = 13420321 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (13420387) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 130244 + ... + 130346.

It is an arithmetic number, because the mean of its divisors is an integer number (771336).

Almost surely, 2^13420385 is an apocalyptic number.

It is an amenable number.

13420385 is a deficient number, since it is larger than the sum of its proper divisors (5091679).

13420385 is a wasteful number, since it uses less digits than its factorization.

13420385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 13420385 is about 3663.3843642184. The cubic root of 13420385 is about 237.6411570845.

The spelling of 13420385 in words is "thirteen million, four hundred twenty thousand, three hundred eighty-five".