287464 has 8 divisors (see below), whose sum is σ = 539010. Its totient is φ = 143728.

The previous prime is 287449. The next prime is 287491. The reversal of 287464 is 464782.

It can be written as a sum of positive squares in only one way, i.e., 220900 + 66564 = 470^2 + 258^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17959 + ... + 17974.

2²⁸⁷⁴⁶⁴ is an apocalyptic number.

It is an amenable number.

287464 is a deficient number, since it is larger than the sum of its proper divisors (251546).

287464 is a wasteful number, since it uses less digits than its factorization.

287464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35939 (or 35935 counting only the distinct ones).

The product of its digits is 10752, while the sum is 31.

The square root of 287464 is about 536.1566935141. The cubic root of 287464 is about 65.9975511794.

The spelling of 287464 in words is "two hundred eighty-seven thousand, four hundred sixty-four".