1328560 has 20 divisors (see below), whose sum is σ = 3089088. Its totient is φ = 531392.

The previous prime is 1328539. The next prime is 1328563. The reversal of 1328560 is 658231.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (1328563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8224 + ... + 8383.

2^1328560 is an apocalyptic number.

1328560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1328560 is an abundant number, since it is smaller than the sum of its proper divisors (1760528).

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

1328560 is a wasteful number, since it uses less digits than its factorization.

1328560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16620 (or 16614 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1328560 is about 1152.6317712088. The cubic root of 1328560 is about 109.9327412526.

The spelling of 1328560 in words is "one million, three hundred twenty-eight thousand, five hundred sixty".