19085428 has 12 divisors (see below), whose sum is σ = 33600672. Its totient is φ = 9485240.

The previous prime is 19085413. The next prime is 19085449. The reversal of 19085428 is 82458091.

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, 13618 + ... + 14953.

It is an arithmetic number, because the mean of its divisors is an integer number (2800056).

Almost surely, 2^19085428 is an apocalyptic number.

It is an amenable number.

19085428 is a deficient number, since it is larger than the sum of its proper divisors (14515244).

19085428 is a wasteful number, since it uses less digits than its factorization.

19085428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28742 (or 28740 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 19085428 is about 4368.6872170024. The cubic root of 19085428 is about 267.2394901713.

The spelling of 19085428 in words is "nineteen million, eighty-five thousand, four hundred twenty-eight".