284990 has 8 divisors (see below), whose sum is σ = 513000. Its totient is φ = 113992.

The previous prime is 284989. The next prime is 285007. The reversal of 284990 is 99482.

284990 is nontrivially palindromic in base 15.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

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 284990.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14240 + ... + 14259.

It is an arithmetic number, because the mean of its divisors is an integer number (64125).

2²⁸⁴⁹⁹⁰ is an apocalyptic number.

284990 is a deficient number, since it is larger than the sum of its proper divisors (228010).

284990 is a wasteful number, since it uses less digits than its factorization.

284990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28506.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 284990 is about 533.8445466613. The cubic root of 284990 is about 65.8076739540.

The spelling of 284990 in words is "two hundred eighty-four thousand, nine hundred ninety".