13404222 has 24 divisors (see below), whose sum is σ = 31277064. Its totient is φ = 4124304.

The previous prime is 13404169. The next prime is 13404233. The reversal of 13404222 is 22240431.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13404195 and 13404204.

It is a congruent number.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 28408 + ... + 28875.

It is an arithmetic number, because the mean of its divisors is an integer number (1303211).

Almost surely, 2^13404222 is an apocalyptic number.

13404222 is an abundant number, since it is smaller than the sum of its proper divisors (17872842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13404222 is a wasteful number, since it uses less digits than its factorization.

13404222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57304 (or 57301 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 13404222 is about 3661.1776793813. The cubic root of 13404222 is about 237.5457167764.

Adding to 13404222 its reverse (22240431), we get a palindrome (35644653).

The spelling of 13404222 in words is "thirteen million, four hundred four thousand, two hundred twenty-two".