1323780 has 24 divisors (see below), whose sum is σ = 3706752. Its totient is φ = 352992.

The previous prime is 1323779. The next prime is 1323797. The reversal of 1323780 is 873231.

It is a self number, because there is not a number n which added to its sum of digits gives 1323780.

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 7 ways as a sum of consecutive naturals, for example, 10972 + ... + 11091.

It is an arithmetic number, because the mean of its divisors is an integer number (154448).

2^1323780 is an apocalyptic number.

1323780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323780 is an abundant number, since it is smaller than the sum of its proper divisors (2382972).

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

1323780 is a wasteful number, since it uses less digits than its factorization.

1323780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22075 (or 22073 counting only the distinct ones).

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

The square root of 1323780 is about 1150.5563871449. The cubic root of 1323780 is about 109.8007412002.

The spelling of 1323780 in words is "one million, three hundred twenty-three thousand, seven hundred eighty".