19924005 has 32 divisors (see below), whose sum is σ = 33177600. Its totient is φ = 10202432.

The previous prime is 19923977. The next prime is 19924013. The reversal of 19924005 is 50042991.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 19924005 - 2⁵ = 19923973 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41356 + ... + 41834.

It is an arithmetic number, because the mean of its divisors is an integer number (1036800).

Almost surely, 2^19924005 is an apocalyptic number.

19924005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19924005 is a deficient number, since it is larger than the sum of its proper divisors (13253595).

19924005 is a wasteful number, since it uses less digits than its factorization.

19924005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 19924005 is about 4463.6313691881. The cubic root of 19924005 is about 271.0975216707.

Adding to 19924005 its reverse (50042991), we get a palindrome (69966996).

The spelling of 19924005 in words is "nineteen million, nine hundred twenty-four thousand, five".