19447996 has 6 divisors (see below), whose sum is σ = 34034000. Its totient is φ = 9723996.

The previous prime is 19447991. The next prime is 19448021. The reversal of 19447996 is 69974491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19447991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2430996 + ... + 2431003.

Almost surely, 2^19447996 is an apocalyptic number.

It is an amenable number.

19447996 is a deficient number, since it is larger than the sum of its proper divisors (14586004).

19447996 is a wasteful number, since it uses less digits than its factorization.

19447996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4862003 (or 4862001 counting only the distinct ones).

The product of its digits is 489888, while the sum is 49.

The square root of 19447996 is about 4409.9882086010. The cubic root of 19447996 is about 268.9211452878.

The spelling of 19447996 in words is "nineteen million, four hundred forty-seven thousand, nine hundred ninety-six".