320002056 has 64 divisors (see below), whose sum is σ = 969710400. Its totient is φ = 96969600.

The previous prime is 320002049. The next prime is 320002063. The reversal of 320002056 is 650200023.

It is an interprime number because it is at equal distance from previous prime (320002049) and next prime (320002063).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64965 + ... + 69716.

It is an arithmetic number, because the mean of its divisors is an integer number (15151725).

Almost surely, 2^320002056 is an apocalyptic number.

320002056 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

320002056 is an abundant number, since it is smaller than the sum of its proper divisors (649708344).

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

320002056 is a wasteful number, since it uses less digits than its factorization.

320002056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134707 (or 134697 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 320002056 is about 17888.6012868530. The cubic root of 320002056 is about 683.9918435469.

Adding to 320002056 its reverse (650200023), we get a palindrome (970202079).

The spelling of 320002056 in words is "three hundred twenty million, two thousand, fifty-six".