320001144 has 16 divisors (see below), whose sum is σ = 800002920. Its totient is φ = 106667040.

The previous prime is 320001137. The next prime is 320001161. The reversal of 320001144 is 441100023.

It is a super-2 number, since 2×320001144² = 204801464322617472, which contains 22 as substring.

320001144 is a modest number, since divided by 1144 gives 320 as remainder.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 6666667 + ... + 6666714.

Almost surely, 2^320001144 is an apocalyptic number.

It is an amenable number.

320001144 is an abundant number, since it is smaller than the sum of its proper divisors (480001776).

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

320001144 is a wasteful number, since it uses less digits than its factorization.

320001144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13333390 (or 13333386 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 320001144 is about 17888.5757957418. The cubic root of 320001144 is about 683.9911937582.

Adding to 320001144 its reverse (441100023), we get a palindrome (761101167).

The spelling of 320001144 in words is "three hundred twenty million, one thousand, one hundred forty-four".