1405028 has 6 divisors (see below), whose sum is σ = 2458806. Its totient is φ = 702512.

The previous prime is 1405009. The next prime is 1405039. The reversal of 1405028 is 8205041.

It can be written as a sum of positive squares in only one way, i.e., 1364224 + 40804 = 1168^2 + 202^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175625 + ... + 175632.

It is an arithmetic number, because the mean of its divisors is an integer number (409801).

2^1405028 is an apocalyptic number.

It is an amenable number.

1405028 is a deficient number, since it is larger than the sum of its proper divisors (1053778).

1405028 is a wasteful number, since it uses less digits than its factorization.

1405028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351261 (or 351259 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1405028 is about 1185.3387701413. The cubic root of 1405028 is about 112.0026572499.

The spelling of 1405028 in words is "one million, four hundred five thousand, twenty-eight".