322478740 has 48 divisors (see below), whose sum is σ = 705729024. Its totient is φ = 123638400.

The previous prime is 322478713. The next prime is 322478743. The reversal of 322478740 is 47874223.

It is a self number, because there is not a number n which added to its sum of digits gives 322478740.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (322478743) 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, 63910 + ... + 68770.

It is an arithmetic number, because the mean of its divisors is an integer number (14702688).

Almost surely, 2^322478740 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 322478740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352864512).

322478740 is an abundant number, since it is smaller than the sum of its proper divisors (383250284).

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

322478740 is a wasteful number, since it uses less digits than its factorization.

322478740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5008 (or 5006 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 37.

The square root of 322478740 is about 17957.6930589650. The cubic root of 322478740 is about 685.7519155523.

The spelling of 322478740 in words is "three hundred twenty-two million, four hundred seventy-eight thousand, seven hundred forty".