19947108 has 24 divisors (see below), whose sum is σ = 46902240. Its totient is φ = 6597760.

The previous prime is 19947101. The next prime is 19947113. The reversal of 19947108 is 80174991.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (19947101) 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, 4773 + ... + 7916.

It is an arithmetic number, because the mean of its divisors is an integer number (1954260).

Almost surely, 2^19947108 is an apocalyptic number.

It is an amenable number.

19947108 is an abundant number, since it is smaller than the sum of its proper divisors (26955132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19947108 is a wasteful number, since it uses less digits than its factorization.

19947108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12827 (or 12825 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 19947108 is about 4466.2185347338. The cubic root of 19947108 is about 271.2022654504.

The spelling of 19947108 in words is "nineteen million, nine hundred forty-seven thousand, one hundred eight".