320002156 has 6 divisors (see below), whose sum is σ = 560003780. Its totient is φ = 160001076.

The previous prime is 320002141. The next prime is 320002201. The reversal of 320002156 is 651200023.

It is a happy number.

320002156 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 as a sum of consecutive naturals, namely, 40000266 + ... + 40000273.

Almost surely, 2^320002156 is an apocalyptic number.

It is an amenable number.

320002156 is a deficient number, since it is larger than the sum of its proper divisors (240001624).

320002156 is a wasteful number, since it uses less digits than its factorization.

320002156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80000543 (or 80000541 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 320002156 is about 17888.6040819288. The cubic root of 320002156 is about 683.9919147956.

Adding to 320002156 its reverse (651200023), we get a palindrome (971202179).

The spelling of 320002156 in words is "three hundred twenty million, two thousand, one hundred fifty-six".