19942908 has 24 divisors (see below), whose sum is σ = 47096448. Its totient is φ = 6567216.

The previous prime is 19942891. The next prime is 19942919. The reversal of 19942908 is 80924991.

It is a self number, because there is not a number n which added to its sum of digits gives 19942908.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9016 + ... + 11007.

It is an arithmetic number, because the mean of its divisors is an integer number (1962352).

Almost surely, 2^19942908 is an apocalyptic number.

It is an amenable number.

19942908 is an abundant number, since it is smaller than the sum of its proper divisors (27153540).

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

19942908 is a wasteful number, since it uses less digits than its factorization.

19942908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20113 (or 20111 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 19942908 is about 4465.7483135528. The cubic root of 19942908 is about 271.1832296171.

The spelling of 19942908 in words is "nineteen million, nine hundred forty-two thousand, nine hundred eight".