1323072 has 42 divisors (see below), whose sum is σ = 3793998. Its totient is φ = 440832.

The previous prime is 1323053. The next prime is 1323073. The reversal of 1323072 is 2703231.

It can be written as a sum of positive squares in only one way, i.e., 1115136 + 207936 = 1056^2 + 456^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1323073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 573 + ... + 1724.

2^1323072 is an apocalyptic number.

1323072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1323072 is an abundant number, since it is smaller than the sum of its proper divisors (2470926).

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

1323072 is a wasteful number, since it uses less digits than its factorization.

1323072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2315 (or 2302 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 1323072 is about 1150.2486687669. The cubic root of 1323072 is about 109.7811627235.

It can be divided in two parts, 132 and 3072, that multiplied together give a palindrome (405504).

The spelling of 1323072 in words is "one million, three hundred twenty-three thousand, seventy-two".