1328975 has 24 divisors (see below), whose sum is σ = 1807920. Its totient is φ = 965120.

The previous prime is 1328969. The next prime is 1328981. The reversal of 1328975 is 5798231.

It is an interprime number because it is at equal distance from previous prime (1328969) and next prime (1328981).

It is not a de Polignac number, because 1328975 - 2⁶ = 1328911 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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 in 23 ways as a sum of consecutive naturals, for example, 22496 + ... + 22554.

It is an arithmetic number, because the mean of its divisors is an integer number (75330).

2^1328975 is an apocalyptic number.

1328975 is a deficient number, since it is larger than the sum of its proper divisors (478945).

1328975 is a wasteful number, since it uses less digits than its factorization.

1328975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 134 counting only the distinct ones).

The product of its digits is 15120, while the sum is 35.

The square root of 1328975 is about 1152.8117799537. The cubic root of 1328975 is about 109.9441865614.

The spelling of 1328975 in words is "one million, three hundred twenty-eight thousand, nine hundred seventy-five".