2019728 has 10 divisors (see below), whose sum is σ = 3913254. Its totient is φ = 1009856.

The previous prime is 2019713. The next prime is 2019739. The reversal of 2019728 is 8279102.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1669264 + 350464 = 1292^2 + 592^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2019728.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63101 + ... + 63132.

2^2019728 is an apocalyptic number.

It is an amenable number.

2019728 is a deficient number, since it is larger than the sum of its proper divisors (1893526).

2019728 is a wasteful number, since it uses less digits than its factorization.

2019728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126241 (or 126235 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 2019728 is about 1421.1713478677. The cubic root of 2019728 is about 126.4050123526.

It can be divided in two parts, 20197 and 28, that multiplied together give a triangular number (565516 = T₁₀₆₃).

The spelling of 2019728 in words is "two million, nineteen thousand, seven hundred twenty-eight".