1323864 has 56 divisors (see below), whose sum is σ = 3738060. Its totient is φ = 439344.

The previous prime is 1323851. The next prime is 1323869. The reversal of 1323864 is 4683231.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323869) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 5719 + ... + 5945.

2^1323864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1323864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1869030).

1323864 is an abundant number, since it is smaller than the sum of its proper divisors (2414196).

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

1323864 is an equidigital number, since it uses as much as digits as its factorization.

1323864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251 (or 232 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 1323864 is about 1150.5928906438. The cubic root of 1323864 is about 109.8030636071.

It can be divided in two parts, 1323 and 864, that added together give a 7-th power (2187 = 3⁷).

The spelling of 1323864 in words is "one million, three hundred twenty-three thousand, eight hundred sixty-four".