19378768 has 20 divisors (see below), whose sum is σ = 37768788. Its totient is φ = 9632000.

The previous prime is 19378753. The next prime is 19378781. The reversal of 19378768 is 86787391.

It can be written as a sum of positive squares in 2 ways, for example, as 13483584 + 5895184 = 3672^2 + 2428^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 733 + ... + 6268.

Almost surely, 2^19378768 is an apocalyptic number.

It is an amenable number.

19378768 is a deficient number, since it is larger than the sum of its proper divisors (18390020).

19378768 is a wasteful number, since it uses less digits than its factorization.

19378768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7182 (or 7176 counting only the distinct ones).

The product of its digits is 508032, while the sum is 49.

The square root of 19378768 is about 4402.1322106452. The cubic root of 19378768 is about 268.6016778104.

It can be divided in two parts, 193 and 78768, that added together give a square (78961 = 281²).

The spelling of 19378768 in words is "nineteen million, three hundred seventy-eight thousand, seven hundred sixty-eight".