320030228644 has 18 divisors (see below), whose sum is σ = 651490108710. Its totient is φ = 137155812192.

The previous prime is 320030228633. The next prime is 320030228681. The reversal of 320030228644 is 446822030023.

It can be written as a sum of positive squares in only one way, i.e., 182233364544 + 137796864100 = 426888^2 + 371210^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 816403449 + ... + 816403840.

Almost surely, 2^320030228644 is an apocalyptic number.

It is an amenable number.

320030228644 is an abundant number, since it is smaller than the sum of its proper divisors (331459880066).

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

320030228644 is a wasteful number, since it uses less digits than its factorization.

320030228644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1632807307 (or 1632807298 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 320030228644 its reverse (446822030023), we get a palindrome (766852258667).

The spelling of 320030228644 in words is "three hundred twenty billion, thirty million, two hundred twenty-eight thousand, six hundred forty-four".