1328535 has 32 divisors (see below), whose sum is σ = 2546880. Its totient is φ = 653184.

The previous prime is 1328531. The next prime is 1328539. The reversal of 1328535 is 5358231.

It is an interprime number because it is at equal distance from previous prime (1328531) and next prime (1328539).

It is not a de Polignac number, because 1328535 - 2² = 1328531 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1328499 and 1328508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1377 + ... + 2133.

It is an arithmetic number, because the mean of its divisors is an integer number (79590).

2^1328535 is an apocalyptic number.

1328535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1328535 is a deficient number, since it is larger than the sum of its proper divisors (1218345).

1328535 is a wasteful number, since it uses less digits than its factorization.

1328535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784 (or 778 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 1328535 is about 1152.6209264108. The cubic root of 1328535 is about 109.9320517001.

The spelling of 1328535 in words is "one million, three hundred twenty-eight thousand, five hundred thirty-five".