287944 has 8 divisors (see below), whose sum is σ = 539910. Its totient is φ = 143968.

The previous prime is 287939. The next prime is 287977. The reversal of 287944 is 449782.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 191844 + 96100 = 438^2 + 310^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a d-powerful number, because it can be written as 2¹³ + 8 + 9³ + 7⁵ + 4³ + 4⁹ .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17989 + ... + 18004.

2²⁸⁷⁹⁴⁴ is an apocalyptic number.

It is an amenable number.

287944 is a deficient number, since it is larger than the sum of its proper divisors (251966).

287944 is a wasteful number, since it uses less digits than its factorization.

287944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35999 (or 35995 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 287944 is about 536.6041371439. The cubic root of 287944 is about 66.0342644244.

The spelling of 287944 in words is "two hundred eighty-seven thousand, nine hundred forty-four".