19028812 has 24 divisors (see below), whose sum is σ = 36493632. Its totient is φ = 8610000.

The previous prime is 19028803. The next prime is 19028819. The reversal of 19028812 is 21882091.

It is a happy number.

It is a super-2 number, since 2×19028812² = 724191372262688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19028819) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 10183 + ... + 11905.

It is an arithmetic number, because the mean of its divisors is an integer number (1520568).

Almost surely, 2^19028812 is an apocalyptic number.

It is an amenable number.

19028812 is a deficient number, since it is larger than the sum of its proper divisors (17464820).

19028812 is a wasteful number, since it uses less digits than its factorization.

19028812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1989 (or 1987 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 19028812 is about 4362.2026546230. The cubic root of 19028812 is about 266.9749774322.

The spelling of 19028812 in words is "nineteen million, twenty-eight thousand, eight hundred twelve".