322560540 has 72 divisors (see below), whose sum is σ = 982760688. Its totient is φ = 85635840.

The previous prime is 322560529. The next prime is 322560541. The reversal of 322560540 is 45065223.

322560540 is a `hidden beast` number, since 32 + 25 + 605 + 4 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (322560541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38095 + ... + 45785.

It is an arithmetic number, because the mean of its divisors is an integer number (13649454).

Almost surely, 2^322560540 is an apocalyptic number.

322560540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 322560540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (491380344).

322560540 is an abundant number, since it is smaller than the sum of its proper divisors (660200148).

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

322560540 is a wasteful number, since it uses less digits than its factorization.

322560540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7939 (or 7934 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 322560540 is about 17959.9704899535. The cubic root of 322560540 is about 685.8098932911.

The spelling of 322560540 in words is "three hundred twenty-two million, five hundred sixty thousand, five hundred forty".