19307012 has 6 divisors (see below), whose sum is σ = 33787278. Its totient is φ = 9653504.

The previous prime is 19307009. The next prime is 19307027. The reversal of 19307012 is 21070391.

It can be written as a sum of positive squares in only one way, i.e., 11600836 + 7706176 = 3406^2 + 2776^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2413373 + ... + 2413380.

It is an arithmetic number, because the mean of its divisors is an integer number (5631213).

Almost surely, 2^19307012 is an apocalyptic number.

It is an amenable number.

19307012 is a deficient number, since it is larger than the sum of its proper divisors (14480266).

19307012 is a wasteful number, since it uses less digits than its factorization.

19307012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4826757 (or 4826755 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 19307012 is about 4393.9745106225. The cubic root of 19307012 is about 268.2697402979.

The spelling of 19307012 in words is "nineteen million, three hundred seven thousand, twelve".