19872041 has 4 divisors (see below), whose sum is σ = 22710912. Its totient is φ = 17033172.

The previous prime is 19872037. The next prime is 19872077. The reversal of 19872041 is 14027891.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19872041 - 2² = 19872037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19871989 and 19872007.

It is not an unprimeable number, because it can be changed into a prime (19872001) 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 3 ways as a sum of consecutive naturals, for example, 1419425 + ... + 1419438.

It is an arithmetic number, because the mean of its divisors is an integer number (5677728).

Almost surely, 2^19872041 is an apocalyptic number.

It is an amenable number.

19872041 is a deficient number, since it is larger than the sum of its proper divisors (2838871).

19872041 is an equidigital number, since it uses as much as digits as its factorization.

19872041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2838870.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 19872041 is about 4457.8067477180. The cubic root of 19872041 is about 270.8616324092.

The spelling of 19872041 in words is "nineteen million, eight hundred seventy-two thousand, forty-one".