1328730 has 32 divisors (see below), whose sum is σ = 3435264. Its totient is φ = 326976.

The previous prime is 1328729. The next prime is 1328731. The reversal of 1328730 is 378231.

It is an interprime number because it is at equal distance from previous prime (1328729) and next prime (1328731).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1328730.

It is not an unprimeable number, because it can be changed into a prime (1328731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1314 + ... + 2093.

It is an arithmetic number, because the mean of its divisors is an integer number (107352).

2^1328730 is an apocalyptic number.

1328730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1328730 is an abundant number, since it is smaller than the sum of its proper divisors (2106534).

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

1328730 is a wasteful number, since it uses less digits than its factorization.

1328730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3430.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 1328730 is about 1152.7055131299. The cubic root of 1328730 is about 109.9374299805.

The spelling of 1328730 in words is "one million, three hundred twenty-eight thousand, seven hundred thirty".