322400540 has 96 divisors (see below), whose sum is σ = 873331200. Its totient is φ = 97009920.

The previous prime is 322400539. The next prime is 322400543. The reversal of 322400540 is 45004223.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (322400543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41051 + ... + 48269.

It is an arithmetic number, because the mean of its divisors is an integer number (9097200).

Almost surely, 2^322400540 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 322400540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (436665600).

322400540 is an abundant number, since it is smaller than the sum of its proper divisors (550930660).

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

322400540 is a wasteful number, since it uses less digits than its factorization.

322400540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7275 (or 7273 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 322400540 is about 17955.5155871392. The cubic root of 322400540 is about 685.6964802338.

Adding to 322400540 its reverse (45004223), we get a palindrome (367404763).

The spelling of 322400540 in words is "three hundred twenty-two million, four hundred thousand, five hundred forty".