19404422 has 16 divisors (see below), whose sum is σ = 30529440. Its totient is φ = 9237312.

The previous prime is 19404409. The next prime is 19404443. The reversal of 19404422 is 22440491.

It is a junction number, because it is equal to n+sod(n) for n = 19404391 and 19404400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1943 + ... + 6525.

It is an arithmetic number, because the mean of its divisors is an integer number (1908090).

Almost surely, 2^19404422 is an apocalyptic number.

19404422 is a deficient number, since it is larger than the sum of its proper divisors (11125018).

19404422 is a wasteful number, since it uses less digits than its factorization.

19404422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4687.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 19404422 is about 4405.0450621986. The cubic root of 19404422 is about 268.7201523008.

The spelling of 19404422 in words is "nineteen million, four hundred four thousand, four hundred twenty-two".