320489430 has 32 divisors (see below), whose sum is σ = 776239200. Its totient is φ = 84678912.

The previous prime is 320489419. The next prime is 320489437. The reversal of 320489430 is 34984023.

It is a junction number, because it is equal to n+sod(n) for n = 320489391 and 320489400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320489437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45735 + ... + 52274.

It is an arithmetic number, because the mean of its divisors is an integer number (24257475).

Almost surely, 2^320489430 is an apocalyptic number.

320489430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

320489430 is an abundant number, since it is smaller than the sum of its proper divisors (455749770).

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

320489430 is a wasteful number, since it uses less digits than its factorization.

320489430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98128.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 320489430 is about 17902.2185775953. The cubic root of 320489430 is about 684.3389150090.

The spelling of 320489430 in words is "three hundred twenty million, four hundred eighty-nine thousand, four hundred thirty".