19740005 has 8 divisors (see below), whose sum is σ = 23741952. Its totient is φ = 15756048.

The previous prime is 19740001. The next prime is 19740013. The reversal of 19740005 is 50004791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19740005 - 2² = 19740001 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19740001) by changing a digit.

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, 1949 + ... + 6578.

It is an arithmetic number, because the mean of its divisors is an integer number (2967744).

Almost surely, 2^19740005 is an apocalyptic number.

It is an amenable number.

19740005 is a deficient number, since it is larger than the sum of its proper divisors (4001947).

19740005 is an equidigital number, since it uses as much as digits as its factorization.

19740005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8995.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 19740005 is about 4442.9725409910. The cubic root of 19740005 is about 270.2604026366.

Adding to 19740005 its reverse (50004791), we get a palindrome (69744796).

The spelling of 19740005 in words is "nineteen million, seven hundred forty thousand, five".