19447012 has 12 divisors (see below), whose sum is σ = 36650236. Its totient is φ = 8975520.

The previous prime is 19447007. The next prime is 19447019. The reversal of 19447012 is 21074491.

It can be written as a sum of positive squares in 2 ways, for example, as 6022116 + 13424896 = 2454^2 + 3664^2 .

It is not an unprimeable number, because it can be changed into a prime (19447019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186939 + ... + 187042.

Almost surely, 2^19447012 is an apocalyptic number.

It is an amenable number.

19447012 is a deficient number, since it is larger than the sum of its proper divisors (17203224).

19447012 is a wasteful number, since it uses less digits than its factorization.

19447012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373998 (or 373996 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 19447012 is about 4409.8766422656. The cubic root of 19447012 is about 268.9166097242.

The spelling of 19447012 in words is "nineteen million, four hundred forty-seven thousand, twelve".