19711072 has 12 divisors (see below), whose sum is σ = 38806236. Its totient is φ = 9855520.

The previous prime is 19711067. The next prime is 19711073. The reversal of 19711072 is 27011791.

It is a self number, because there is not a number n which added to its sum of digits gives 19711072.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19711073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307954 + ... + 308017.

It is an arithmetic number, because the mean of its divisors is an integer number (3233853).

Almost surely, 2^19711072 is an apocalyptic number.

It is an amenable number.

19711072 is a deficient number, since it is larger than the sum of its proper divisors (19095164).

19711072 is an equidigital number, since it uses as much as digits as its factorization.

19711072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615981 (or 615973 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 28.

The square root of 19711072 is about 4439.7153061880. The cubic root of 19711072 is about 270.1282975084.

The spelling of 19711072 in words is "nineteen million, seven hundred eleven thousand, seventy-two".