1328507 has 2 divisors, whose sum is σ = 1328508. Its totient is φ = 1328506.

The previous prime is 1328501. The next prime is 1328521. The reversal of 1328507 is 7058231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1328507 - 2⁴ = 1328491 is a prime.

It is a plaindrome in base 16.

It is not a weakly prime, because it can be changed into another prime (1328501) by changing a digit.

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, 664253 + 664254.

It is an arithmetic number, because the mean of its divisors is an integer number (664254).

2^1328507 is an apocalyptic number.

1328507 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328507 is an equidigital number, since it uses as much as digits as its factorization.

1328507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 1328507 is about 1152.6087801158. The cubic root of 1328507 is about 109.9312793910.

The spelling of 1328507 in words is "one million, three hundred twenty-eight thousand, five hundred seven".