19694972 has 24 divisors (see below), whose sum is σ = 37822512. Its totient is φ = 8899200.

The previous prime is 19694957. The next prime is 19694981. The reversal of 19694972 is 27949691.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6728 + ... + 9200.

It is an arithmetic number, because the mean of its divisors is an integer number (1575938).

Almost surely, 2^19694972 is an apocalyptic number.

It is an amenable number.

19694972 is a deficient number, since it is larger than the sum of its proper divisors (18127540).

19694972 is a wasteful number, since it uses less digits than its factorization.

19694972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2669 (or 2667 counting only the distinct ones).

The product of its digits is 244944, while the sum is 47.

The square root of 19694972 is about 4437.9017564610. The cubic root of 19694972 is about 270.0547305603.

The spelling of 19694972 in words is "nineteen million, six hundred ninety-four thousand, nine hundred seventy-two".