1328540 has 24 divisors (see below), whose sum is σ = 2812992. Its totient is φ = 527040.

The previous prime is 1328539. The next prime is 1328563. The reversal of 1328540 is 458231.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3437 + ... + 3803.

It is an arithmetic number, because the mean of its divisors is an integer number (117208).

2^1328540 is an apocalyptic number.

1328540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1328540 is an abundant number, since it is smaller than the sum of its proper divisors (1484452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1328540 is a wasteful number, since it uses less digits than its factorization.

1328540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557 (or 555 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1328540 is about 1152.6230953785. The cubic root of 1328540 is about 109.9321896113.

The spelling of 1328540 in words is "one million, three hundred twenty-eight thousand, five hundred forty".