1901728 has 24 divisors (see below), whose sum is σ = 3804192. Its totient is φ = 935616.

The previous prime is 1901719. The next prime is 1901749. The reversal of 1901728 is 8271091.

It is a junction number, because it is equal to n+sod(n) for n = 1901696 and 1901705.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1701 + ... + 2587.

It is an arithmetic number, because the mean of its divisors is an integer number (158508).

2^1901728 is an apocalyptic number.

It is an amenable number.

1901728 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

1901728 is an equidigital number, since it uses as much as digits as its factorization.

1901728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964 (or 956 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 1901728 is about 1379.0315442368. The cubic root of 1901728 is about 123.8937695806.

The spelling of 1901728 in words is "one million, nine hundred one thousand, seven hundred twenty-eight".