19996227 has 48 divisors (see below), whose sum is σ = 32497920. Its totient is φ = 12247200.

The previous prime is 19996219. The next prime is 19996261. The reversal of 19996227 is 72269991.

19996227 is a `hidden beast` number, since 19 + 9 + 9 + 622 + 7 = 666.

It is not a de Polignac number, because 19996227 - 2³ = 19996219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19996297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 281602 + ... + 281672.

It is an arithmetic number, because the mean of its divisors is an integer number (677040).

Almost surely, 2^19996227 is an apocalyptic number.

19996227 is a deficient number, since it is larger than the sum of its proper divisors (12501693).

19996227 is an equidigital number, since it uses as much as digits as its factorization.

19996227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 154 counting only the distinct ones).

The product of its digits is 122472, while the sum is 45.

The square root of 19996227 is about 4471.7141008790. The cubic root of 19996227 is about 271.4246914232.

The spelling of 19996227 in words is "nineteen million, nine hundred ninety-six thousand, two hundred twenty-seven".