287038 has 4 divisors (see below), whose sum is σ = 430560. Its totient is φ = 143518.

The previous prime is 287003. The next prime is 287047. The reversal of 287038 is 830782.

It is a happy number.

287038 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 830782 = 2 ⋅415391.

It is a junction number, because it is equal to n+sod(n) for n = 286997 and 287015.

It is a congruent number.

It is an unprimeable number.

287038 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71758 + ... + 71761.

It is an arithmetic number, because the mean of its divisors is an integer number (107640).

2²⁸⁷⁰³⁸ is an apocalyptic number.

287038 is a deficient number, since it is larger than the sum of its proper divisors (143522).

287038 is a wasteful number, since it uses less digits than its factorization.

287038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143521.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 287038 is about 535.7592743014. The cubic root of 287038 is about 65.9649339284.

The spelling of 287038 in words is "two hundred eighty-seven thousand, thirty-eight".