320400048 has 40 divisors (see below), whose sum is σ = 830788096. Its totient is φ = 106401600.

The previous prime is 320400043. The next prime is 320400049. The reversal of 320400048 is 840004023.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 320399997 and 320400033.

It is not an unprimeable number, because it can be changed into a prime (320400043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 693 + ... + 25323.

Almost surely, 2^320400048 is an apocalyptic number.

It is an amenable number.

320400048 is an abundant number, since it is smaller than the sum of its proper divisors (510388048).

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

320400048 is a wasteful number, since it uses less digits than its factorization.

320400048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24913 (or 24907 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 320400048 is about 17899.7220090146. The cubic root of 320400048 is about 684.2752901669.

The spelling of 320400048 in words is "three hundred twenty million, four hundred thousand, forty-eight".