19909048 has 16 divisors (see below), whose sum is σ = 37578960. Its totient is φ = 9888000.

The previous prime is 19908953. The next prime is 19909061. The reversal of 19909048 is 84090991.

It is a self number, because there is not a number n which added to its sum of digits gives 19909048.

It is a congruent number.

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, 7033 + ... + 9448.

It is an arithmetic number, because the mean of its divisors is an integer number (2348685).

Almost surely, 2^19909048 is an apocalyptic number.

It is an amenable number.

19909048 is a deficient number, since it is larger than the sum of its proper divisors (17669912).

19909048 is a wasteful number, since it uses less digits than its factorization.

19909048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16638 (or 16634 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 19909048 is about 4461.9556250595. The cubic root of 19909048 is about 271.0296668275.

The spelling of 19909048 in words is "nineteen million, nine hundred nine thousand, forty-eight".