19947056 has 20 divisors (see below), whose sum is σ = 38929800. Its totient is φ = 9900672.

The previous prime is 19947029. The next prime is 19947071. The reversal of 19947056 is 65074991.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2261 + ... + 6708.

It is an arithmetic number, because the mean of its divisors is an integer number (1946490).

Almost surely, 2^19947056 is an apocalyptic number.

19947056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19947056 is a deficient number, since it is larger than the sum of its proper divisors (18982744).

19947056 is a wasteful number, since it uses less digits than its factorization.

19947056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9116 (or 9110 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 19947056 is about 4466.2127132505. The cubic root of 19947056 is about 271.2020297850.

The spelling of 19947056 in words is "nineteen million, nine hundred forty-seven thousand, fifty-six".