13820455 has 16 divisors (see below), whose sum is σ = 18403200. Its totient is φ = 9878560.

The previous prime is 13820453. The next prime is 13820459. The reversal of 13820455 is 55402831.

13820455 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 13820455 - 2¹ = 13820453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13820453) 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, 1116 + ... + 5374.

It is an arithmetic number, because the mean of its divisors is an integer number (1150200).

Almost surely, 2^13820455 is an apocalyptic number.

13820455 is a deficient number, since it is larger than the sum of its proper divisors (4582745).

13820455 is a wasteful number, since it uses less digits than its factorization.

13820455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4334.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 13820455 is about 3717.5872551966. The cubic root of 13820455 is about 239.9794831998.

The spelling of 13820455 in words is "thirteen million, eight hundred twenty thousand, four hundred fifty-five".