19397492 has 12 divisors (see below), whose sum is σ = 34039236. Its totient is φ = 9672000.

The previous prime is 19397447. The next prime is 19397503. The reversal of 19397492 is 29479391.

It can be written as a sum of positive squares in 2 ways, for example, as 3984016 + 15413476 = 1996^2 + 3926^2 .

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, 5009 + ... + 7992.

It is an arithmetic number, because the mean of its divisors is an integer number (2836603).

Almost surely, 2^19397492 is an apocalyptic number.

It is an amenable number.

19397492 is a deficient number, since it is larger than the sum of its proper divisors (14641744).

19397492 is a wasteful number, since it uses less digits than its factorization.

19397492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13378 (or 13376 counting only the distinct ones).

The product of its digits is 122472, while the sum is 44.

The square root of 19397492 is about 4404.2583938729. The cubic root of 19397492 is about 268.6881586933.

The spelling of 19397492 in words is "nineteen million, three hundred ninety-seven thousand, four hundred ninety-two".