1328580 has 108 divisors (see below), whose sum is σ = 4502316. Its totient is φ = 316800.

The previous prime is 1328573. The next prime is 1328603. The reversal of 1328580 is 858231.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 213444 + 1115136 = 462^2 + 1056^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 21750 + ... + 21810.

2^1328580 is an apocalyptic number.

1328580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1328580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2251158).

1328580 is an abundant number, since it is smaller than the sum of its proper divisors (3173736).

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

1328580 is a wasteful number, since it uses less digits than its factorization.

1328580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 1328580 is about 1152.6404469738. The cubic root of 1328580 is about 109.9332928884.

The spelling of 1328580 in words is "one million, three hundred twenty-eight thousand, five hundred eighty".