13820845 has 8 divisors (see below), whose sum is σ = 16970976. Its totient is φ = 10799376.

The previous prime is 13820843. The next prime is 13820857. The reversal of 13820845 is 54802831.

13820845 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13820845 - 2¹ = 13820843 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13820843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31927 + ... + 32356.

It is an arithmetic number, because the mean of its divisors is an integer number (2121372).

Almost surely, 2^13820845 is an apocalyptic number.

It is an amenable number.

13820845 is a deficient number, since it is larger than the sum of its proper divisors (3150131).

13820845 is an equidigital number, since it uses as much as digits as its factorization.

13820845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64331.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 13820845 is about 3717.6397082020. The cubic root of 13820845 is about 239.9817405090.

The spelling of 13820845 in words is "thirteen million, eight hundred twenty thousand, eight hundred forty-five".