19404222 has 16 divisors (see below), whose sum is σ = 39445392. Its totient is φ = 6361920.

The previous prime is 19404211. The next prime is 19404227. The reversal of 19404222 is 22240491.

It is a junction number, because it is equal to n+sod(n) for n = 19404192 and 19404201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19404227) 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, 26143 + ... + 26874.

It is an arithmetic number, because the mean of its divisors is an integer number (2465337).

Almost surely, 2^19404222 is an apocalyptic number.

19404222 is an abundant number, since it is smaller than the sum of its proper divisors (20041170).

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

19404222 is a wasteful number, since it uses less digits than its factorization.

19404222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53083.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 19404222 is about 4405.0223608967. The cubic root of 19404222 is about 268.7192290712.

The spelling of 19404222 in words is "nineteen million, four hundred four thousand, two hundred twenty-two".