283990 has 16 divisors (see below), whose sum is σ = 584352. Its totient is φ = 97344.

The previous prime is 283979. The next prime is 284003. The reversal of 283990 is 99382.

It is a happy number.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

283990 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 in 7 ways as a sum of consecutive naturals, for example, 1959 + ... + 2098.

It is an arithmetic number, because the mean of its divisors is an integer number (36522).

2²⁸³⁹⁹⁰ is an apocalyptic number.

283990 is an abundant number, since it is smaller than the sum of its proper divisors (300362).

It is a weird number, because it is abundant, but not a pseudoperfect number.

283990 is a wasteful number, since it uses less digits than its factorization.

283990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4071.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 283990 is about 532.9071213636. The cubic root of 283990 is about 65.7306130102.

The spelling of 283990 in words is "two hundred eighty-three thousand, nine hundred ninety".