1305028 has 6 divisors (see below), whose sum is σ = 2283806. Its totient is φ = 652512.

The previous prime is 1305013. The next prime is 1305047. The reversal of 1305028 is 8205031.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 760384 + 544644 = 872^2 + 738^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1304996 and 1305014.

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, 163125 + ... + 163132.

2^1305028 is an apocalyptic number.

It is an amenable number.

1305028 is a deficient number, since it is larger than the sum of its proper divisors (978778).

1305028 is a wasteful number, since it uses less digits than its factorization.

1305028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326261 (or 326259 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1305028 is about 1142.3782210809. The cubic root of 1305028 is about 109.2798130214.

The spelling of 1305028 in words is "one million, three hundred five thousand, twenty-eight".