1919728 has 10 divisors (see below), whose sum is σ = 3719504. Its totient is φ = 959856.

The previous prime is 1919719. The next prime is 1919761. The reversal of 1919728 is 8279191.

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 as a sum of consecutive naturals, namely, 59976 + ... + 60007.

2^1919728 is an apocalyptic number.

It is an amenable number.

1919728 is a deficient number, since it is larger than the sum of its proper divisors (1799776).

1919728 is a wasteful number, since it uses less digits than its factorization.

1919728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119991 (or 119985 counting only the distinct ones).

The product of its digits is 9072, while the sum is 37.

The square root of 1919728 is about 1385.5424930330. The cubic root of 1919728 is about 124.2834307440.

The spelling of 1919728 in words is "one million, nine hundred nineteen thousand, seven hundred twenty-eight".