19128434 has 24 divisors (see below), whose sum is σ = 32907060. Its totient is φ = 8306688.

The previous prime is 19128419. The next prime is 19128463. The reversal of 19128434 is 43482191.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 4190209 + 14938225 = 2047^2 + 3865^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 19128434.

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 11 ways as a sum of consecutive naturals, for example, 4082 + ... + 7410.

Almost surely, 2^19128434 is an apocalyptic number.

19128434 is a deficient number, since it is larger than the sum of its proper divisors (13778626).

19128434 is a wasteful number, since it uses less digits than its factorization.

19128434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3374 (or 3361 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 19128434 is about 4373.6065209390. The cubic root of 19128434 is about 267.4400669294.

The spelling of 19128434 in words is "nineteen million, one hundred twenty-eight thousand, four hundred thirty-four".