2045728 has 12 divisors (see below), whose sum is σ = 4027590. Its totient is φ = 1022848.

The previous prime is 2045713. The next prime is 2045731. The reversal of 2045728 is 8275402.

It can be written as a sum of positive squares in only one way, i.e., 1993744 + 51984 = 1412^2 + 228^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2045696 and 2045705.

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, 31933 + ... + 31996.

2^2045728 is an apocalyptic number.

It is an amenable number.

2045728 is a deficient number, since it is larger than the sum of its proper divisors (1981862).

2045728 is an equidigital number, since it uses as much as digits as its factorization.

2045728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63939 (or 63931 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 2045728 is about 1430.2894811890. The cubic root of 2045728 is about 126.9451061666.

The spelling of 2045728 in words is "two million, forty-five thousand, seven hundred twenty-eight".