323606440 has 64 divisors (see below), whose sum is σ = 766175760. Its totient is φ = 122849280.

The previous prime is 323606429. The next prime is 323606443. The reversal of 323606440 is 44606323.

It can be written as a sum of positive squares in 8 ways, for example, as 236482884 + 87123556 = 15378^2 + 9334^2 .

It is a super-2 number, since 2×323606440² = 209442256018947200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 323606399 and 323606408.

It is not an unprimeable number, because it can be changed into a prime (323606443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58014 + ... + 63346.

Almost surely, 2^323606440 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 323606440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (383087880).

323606440 is an abundant number, since it is smaller than the sum of its proper divisors (442569320).

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

323606440 is a wasteful number, since it uses less digits than its factorization.

323606440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5422 (or 5418 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 323606440 is about 17989.0644559410. The cubic root of 323606440 is about 686.5503379566.

The spelling of 323606440 in words is "three hundred twenty-three million, six hundred six thousand, four hundred forty".