320284470784 has 80 divisors (see below), whose sum is σ = 662875765200. Its totient is φ = 154417987584.

The previous prime is 320284470767. The next prime is 320284470787. The reversal of 320284470784 is 487074482023.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320284470787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11671672 + ... + 11699080.

It is an arithmetic number, because the mean of its divisors is an integer number (8285947065).

Almost surely, 2^320284470784 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 320284470784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331437882600).

320284470784 is an abundant number, since it is smaller than the sum of its proper divisors (342591294416).

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

320284470784 is an equidigital number, since it uses as much as digits as its factorization.

320284470784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28243 (or 28227 counting only the distinct ones).

The product of its (nonzero) digits is 2408448, while the sum is 49.

The spelling of 320284470784 in words is "three hundred twenty billion, two hundred eighty-four million, four hundred seventy thousand, seven hundred eighty-four".