19397344 has 24 divisors (see below), whose sum is σ = 38676960. Its totient is φ = 9574656.

The previous prime is 19397299. The next prime is 19397359. The reversal of 19397344 is 44379391.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 19397297 and 19397306.

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, 1309 + ... + 6364.

It is an arithmetic number, because the mean of its divisors is an integer number (1611540).

Almost surely, 2^19397344 is an apocalyptic number.

It is an amenable number.

19397344 is a deficient number, since it is larger than the sum of its proper divisors (19279616).

19397344 is an equidigital number, since it uses as much as digits as its factorization.

19397344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7762 (or 7754 counting only the distinct ones).

The product of its digits is 81648, while the sum is 40.

The square root of 19397344 is about 4404.2415919202. The cubic root of 19397344 is about 268.6874753412.

The spelling of 19397344 in words is "nineteen million, three hundred ninety-seven thousand, three hundred forty-four".