19000028 has 24 divisors (see below), whose sum is σ = 33962880. Its totient is φ = 9298800.

The previous prime is 19000027. The next prime is 19000031. The reversal of 19000028 is 82000091.

It is a super-2 number, since 2×19000028² = 722002128001568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18999973 and 19000009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19000027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49943 + ... + 50321.

It is an arithmetic number, because the mean of its divisors is an integer number (1415120).

Almost surely, 2^19000028 is an apocalyptic number.

It is an amenable number.

19000028 is a deficient number, since it is larger than the sum of its proper divisors (14962852).

19000028 is a wasteful number, since it uses less digits than its factorization.

19000028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 19000028 is about 4358.9021553598. The cubic root of 19000028 is about 266.8402959515.

The spelling of 19000028 in words is "nineteen million, twenty-eight", and thus it is an aban number and an uban number.