322540272 has 80 divisors (see below), whose sum is σ = 936324000. Its totient is φ = 106292736.

The previous prime is 322540223. The next prime is 322540313. The reversal of 322540272 is 272045223.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34254 + ... + 42642.

It is an arithmetic number, because the mean of its divisors is an integer number (11704050).

Almost surely, 2^322540272 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 322540272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (468162000).

322540272 is an abundant number, since it is smaller than the sum of its proper divisors (613783728).

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

322540272 is a wasteful number, since it uses less digits than its factorization.

322540272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8495 (or 8483 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 322540272 is about 17959.4062262648. The cubic root of 322540272 is about 685.7955287668.

Adding to 322540272 its reverse (272045223), we get a palindrome (594585495).

The spelling of 322540272 in words is "three hundred twenty-two million, five hundred forty thousand, two hundred seventy-two".