19004012 has 12 divisors (see below), whose sum is σ = 33658296. Its totient is φ = 9387360.

The previous prime is 19003997. The next prime is 19004053. The reversal of 19004012 is 21040091.

It is a happy number.

It is a super-2 number, since 2×19004012² = 722304944192288, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 28289 + ... + 28952.

It is an arithmetic number, because the mean of its divisors is an integer number (2804858).

Almost surely, 2^19004012 is an apocalyptic number.

It is an amenable number.

19004012 is a deficient number, since it is larger than the sum of its proper divisors (14654284).

19004012 is a wasteful number, since it uses less digits than its factorization.

19004012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57328 (or 57326 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 19004012 is about 4359.3591272112. The cubic root of 19004012 is about 266.8589453529.

The spelling of 19004012 in words is "nineteen million, four thousand, twelve".