19924135 has 24 divisors (see below), whose sum is σ = 30344976. Its totient is φ = 12418560.

The previous prime is 19924133. The next prime is 19924139. The reversal of 19924135 is 53142991.

It is not a de Polignac number, because 19924135 - 2¹ = 19924133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19924135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19924133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1002 + ... + 6391.

It is an arithmetic number, because the mean of its divisors is an integer number (1264374).

Almost surely, 2^19924135 is an apocalyptic number.

19924135 is a deficient number, since it is larger than the sum of its proper divisors (10420841).

19924135 is a wasteful number, since it uses less digits than its factorization.

19924135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7423 (or 7416 counting only the distinct ones).

The product of its digits is 9720, while the sum is 34.

The square root of 19924135 is about 4463.6459312988. The cubic root of 19924135 is about 271.0981112878.

The spelling of 19924135 in words is "nineteen million, nine hundred twenty-four thousand, one hundred thirty-five".