1329800 has 48 divisors (see below), whose sum is σ = 3171300. Its totient is φ = 518400.

The previous prime is 1329799. The next prime is 1329847. The reversal of 1329800 is 89231.

It can be written as a sum of positive squares in 6 ways, for example, as 244036 + 1085764 = 494^2 + 1042^2 .

It is a plaindrome in base 14.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12146 + ... + 12254.

2^1329800 is an apocalyptic number.

1329800 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 1329800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1585650).

1329800 is an abundant number, since it is smaller than the sum of its proper divisors (1841500).

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

1329800 is a wasteful number, since it uses less digits than its factorization.

1329800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1329800 is about 1153.1695452101. The cubic root of 1329800 is about 109.9669322090.

The spelling of 1329800 in words is "one million, three hundred twenty-nine thousand, eight hundred".