19304012 has 48 divisors (see below), whose sum is σ = 41950272. Its totient is φ = 7568640.

The previous prime is 19304003. The next prime is 19304023. The reversal of 19304012 is 21040391.

It is a super-2 number, since 2×19304012² = 745289758592288, which contains 22 as substring.

It is a nialpdrome in base 11.

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 15 ways as a sum of consecutive naturals, for example, 65738 + ... + 66030.

It is an arithmetic number, because the mean of its divisors is an integer number (873964).

Almost surely, 2^19304012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19304012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20975136).

19304012 is an abundant number, since it is smaller than the sum of its proper divisors (22646260).

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

19304012 is a wasteful number, since it uses less digits than its factorization.

19304012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498 (or 496 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 19304012 is about 4393.6331207783. The cubic root of 19304012 is about 268.2558446399.

The spelling of 19304012 in words is "nineteen million, three hundred four thousand, twelve".