19828071 has 28 divisors (see below), whose sum is σ = 30297960. Its totient is φ = 12966480.

The previous prime is 19828057. The next prime is 19828073. The reversal of 19828071 is 17082891.

It is not a de Polignac number, because 19828071 - 2¹⁰ = 19827047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19828073) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 42781 + ... + 43241.

It is an arithmetic number, because the mean of its divisors is an integer number (1082070).

Almost surely, 2^19828071 is an apocalyptic number.

19828071 is a deficient number, since it is larger than the sum of its proper divisors (10469889).

19828071 is an frugal number, since it uses more digits than its factorization.

19828071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538 (or 523 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 19828071 is about 4452.8722191413. The cubic root of 19828071 is about 270.6617103029.

The spelling of 19828071 in words is "nineteen million, eight hundred twenty-eight thousand, seventy-one".