19428208 has 20 divisors (see below), whose sum is σ = 37740888. Its totient is φ = 9688640.

The previous prime is 19428197. The next prime is 19428209. The reversal of 19428208 is 80282491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19428209) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5718 + ... + 8458.

Almost surely, 2^19428208 is an apocalyptic number.

It is an amenable number.

19428208 is a deficient number, since it is larger than the sum of its proper divisors (18312680).

19428208 is a wasteful number, since it uses less digits than its factorization.

19428208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3192 (or 3186 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 19428208 is about 4407.7440942051. The cubic root of 19428208 is about 268.8299067962.

The spelling of 19428208 in words is "nineteen million, four hundred twenty-eight thousand, two hundred eight".