320430540 has 48 divisors (see below), whose sum is σ = 901162080. Its totient is φ = 85071360.

The previous prime is 320430529. The next prime is 320430559. The reversal of 320430540 is 45034023.

It is a happy number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2080 + ... + 25400.

It is an arithmetic number, because the mean of its divisors is an integer number (18774210).

Almost surely, 2^320430540 is an apocalyptic number.

320430540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320430540 is an abundant number, since it is smaller than the sum of its proper divisors (580731540).

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

320430540 is a wasteful number, since it uses less digits than its factorization.

320430540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23562 (or 23560 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 320430540 is about 17900.5737338221. The cubic root of 320430540 is about 684.2969966350.

Adding to 320430540 its reverse (45034023), we get a palindrome (365464563).

The spelling of 320430540 in words is "three hundred twenty million, four hundred thirty thousand, five hundred forty".