320263452828 has 144 divisors (see below), whose sum is σ = 921698354304. Its totient is φ = 96430875840.

The previous prime is 320263452809. The next prime is 320263452841. The reversal of 320263452828 is 828254362023.

It is a happy number.

320263452828 is a `hidden beast` number, since 3 + 2 + 0 + 2 + 634 + 5 + 2 + 8 + 2 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1583251 + ... + 1774037.

It is an arithmetic number, because the mean of its divisors is an integer number (6400683016).

Almost surely, 2^320263452828 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 320263452828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (460849177152).

320263452828 is an abundant number, since it is smaller than the sum of its proper divisors (601434901476).

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

320263452828 is a wasteful number, since it uses less digits than its factorization.

320263452828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190974 (or 190960 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 45.

The spelling of 320263452828 in words is "three hundred twenty billion, two hundred sixty-three million, four hundred fifty-two thousand, eight hundred twenty-eight".