19397072 has 20 divisors (see below), whose sum is σ = 38795136. Its totient is φ = 9385440.

The previous prime is 19397069. The next prime is 19397089. The reversal of 19397072 is 27079391.

19397072 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19058 + ... + 20049.

Almost surely, 2^19397072 is an apocalyptic number.

It is an amenable number.

19397072 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19397072 is a wasteful number, since it uses less digits than its factorization.

19397072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39146 (or 39140 counting only the distinct ones).

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 19397072 is about 4404.2107124887. The cubic root of 19397072 is about 268.6862194419.

The spelling of 19397072 in words is "nineteen million, three hundred ninety-seven thousand, seventy-two".