320005772 has 6 divisors (see below), whose sum is σ = 560010108. Its totient is φ = 160002884.

The previous prime is 320005757. The next prime is 320005783. The reversal of 320005772 is 277500023.

It is a super-2 number, since 2×320005772² = 204807388226631968, which contains 22 as substring.

320005772 is a modest number, since divided by 5772 gives 320 as remainder.

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, 40000718 + ... + 40000725.

It is an arithmetic number, because the mean of its divisors is an integer number (93335018).

Almost surely, 2^320005772 is an apocalyptic number.

It is an amenable number.

320005772 is a deficient number, since it is larger than the sum of its proper divisors (240004336).

320005772 is a wasteful number, since it uses less digits than its factorization.

320005772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80001447 (or 80001445 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 26.

The square root of 320005772 is about 17888.7051515754. The cubic root of 320005772 is about 683.9944911381.

Adding to 320005772 its reverse (277500023), we get a palindrome (597505795).

The spelling of 320005772 in words is "three hundred twenty million, five thousand, seven hundred seventy-two".