320000430 has 32 divisors (see below), whose sum is σ = 770086944. Its totient is φ = 85101696.

The previous prime is 320000419. The next prime is 320000431. The reversal of 320000430 is 34000023.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320000431) 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, 3109 + ... + 25488.

It is an arithmetic number, because the mean of its divisors is an integer number (24065217).

Almost surely, 2^320000430 is an apocalyptic number.

320000430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

320000430 is an abundant number, since it is smaller than the sum of its proper divisors (450086514).

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

320000430 is a wasteful number, since it uses less digits than its factorization.

320000430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28980.

The product of its (nonzero) digits is 72, while the sum is 12.

The square root of 320000430 is about 17888.5558388597. Note that the first 3 decimals coincide. The cubic root of 320000430 is about 683.9906850412.

Adding to 320000430 its reverse (34000023), we get a palindrome (354000453).

The spelling of 320000430 in words is "three hundred twenty million, four hundred thirty", and thus it is an aban number.