19420204 has 48 divisors (see below), whose sum is σ = 37497600. Its totient is φ = 8769600.

The previous prime is 19420201. The next prime is 19420217. The reversal of 19420204 is 40202491.

It is not an unprimeable number, because it can be changed into a prime (19420201) 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, 273489 + ... + 273559.

It is an arithmetic number, because the mean of its divisors is an integer number (781200).

Almost surely, 2^19420204 is an apocalyptic number.

It is an amenable number.

19420204 is a deficient number, since it is larger than the sum of its proper divisors (18077396).

19420204 is a wasteful number, since it uses less digits than its factorization.

19420204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 19420204 is about 4406.8360532246. The cubic root of 19420204 is about 268.7929843631.

Adding to 19420204 its reverse (40202491), we get a palindrome (59622695).

The spelling of 19420204 in words is "nineteen million, four hundred twenty thousand, two hundred four".