285038 has 16 divisors (see below), whose sum is σ = 485520. Its totient is φ = 124416.

The previous prime is 285031. The next prime is 285049. The reversal of 285038 is 830582.

285038 = 47² + 48² + ... + 98².

It is a super-2 number, since 2×285038² = 162493322888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 284998 and 285016.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 285038.

It is not an unprimeable number, because it can be changed into a prime (285031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206 + ... + 782.

It is an arithmetic number, because the mean of its divisors is an integer number (30345).

2²⁸⁵⁰³⁸ is an apocalyptic number.

285038 is a deficient number, since it is larger than the sum of its proper divisors (200482).

285038 is a wasteful number, since it uses less digits than its factorization.

285038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 285038 is about 533.8895016761. The cubic root of 285038 is about 65.8113683421.

The spelling of 285038 in words is "two hundred eighty-five thousand, thirty-eight".