322240440 has 128 divisors (see below), whose sum is σ = 1031952960. Its totient is φ = 80216064.

The previous prime is 322240439. The next prime is 322240441. The reversal of 322240440 is 44042223.

It is an interprime number because it is at equal distance from previous prime (322240439) and next prime (322240441).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (322240441) 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, 278904 + ... + 280056.

Almost surely, 2^322240440 is an apocalyptic number.

322240440 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 322240440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (515976480).

322240440 is an abundant number, since it is smaller than the sum of its proper divisors (709712520).

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

322240440 is a wasteful number, since it uses less digits than its factorization.

322240440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321 (or 1317 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 322240440 is about 17951.0567934036. The cubic root of 322240440 is about 685.5829587290.

Adding to 322240440 its reverse (44042223), we get a palindrome (366282663).

The spelling of 322240440 in words is "three hundred twenty-two million, two hundred forty thousand, four hundred forty".