19589972 has 12 divisors (see below), whose sum is σ = 34366836. Its totient is φ = 9770880.

The previous prime is 19589971. The next prime is 19589981. The reversal of 19589972 is 27998591.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4813636 + 14776336 = 2194^2 + 3844^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 19589972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19589971) 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, 4133 + ... + 7500.

It is an arithmetic number, because the mean of its divisors is an integer number (2863903).

Almost surely, 2^19589972 is an apocalyptic number.

It is an amenable number.

19589972 is a deficient number, since it is larger than the sum of its proper divisors (14776864).

19589972 is a wasteful number, since it uses less digits than its factorization.

19589972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12058 (or 12056 counting only the distinct ones).

The product of its digits is 408240, while the sum is 50.

The square root of 19589972 is about 4426.0560321803. The cubic root of 19589972 is about 269.5739600099.

The spelling of 19589972 in words is "nineteen million, five hundred eighty-nine thousand, nine hundred seventy-two".