320001444 has 36 divisors (see below), whose sum is σ = 924449344. Its totient is φ = 91428912.

The previous prime is 320001379. The next prime is 320001463. The reversal of 320001444 is 444100023.

It is a tau number, because it is divible by the number of its divisors (36).

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

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 11 ways as a sum of consecutive naturals, for example, 634672 + ... + 635175.

Almost surely, 2^320001444 is an apocalyptic number.

It is an amenable number.

320001444 is an abundant number, since it is smaller than the sum of its proper divisors (604447900).

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

320001444 is a wasteful number, since it uses less digits than its factorization.

320001444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269864 (or 1269859 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 320001444 is about 17888.5841809798. The cubic root of 320001444 is about 683.9914075047.

Adding to 320001444 its reverse (444100023), we get a palindrome (764101467).

The spelling of 320001444 in words is "three hundred twenty million, one thousand, four hundred forty-four".