19308128 has 24 divisors (see below), whose sum is σ = 43443792. Its totient is φ = 8274816.

The previous prime is 19308103. The next prime is 19308137. The reversal of 19308128 is 82180391.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 19308094 and 19308103.

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 3 ways as a sum of consecutive naturals, for example, 42875 + ... + 43322.

It is an arithmetic number, because the mean of its divisors is an integer number (1810158).

Almost surely, 2^19308128 is an apocalyptic number.

It is an amenable number.

19308128 is an abundant number, since it is smaller than the sum of its proper divisors (24135664).

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

19308128 is an equidigital number, since it uses as much as digits as its factorization.

19308128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86214 (or 86206 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 19308128 is about 4394.1015008759. The cubic root of 19308128 is about 268.2749091154.

The spelling of 19308128 in words is "nineteen million, three hundred eight thousand, one hundred twenty-eight".