283390 has 16 divisors (see below), whose sum is σ = 540432. Its totient is φ = 106624.

The previous prime is 283369. The next prime is 283397. The reversal of 283390 is 93382.

283390 = 28² + 29² + ... + 95².

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (283397) by changing a digit.

283390 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 664 + ... + 1003.

It is an arithmetic number, because the mean of its divisors is an integer number (33777).

2²⁸³³⁹⁰ is an apocalyptic number.

283390 is a deficient number, since it is larger than the sum of its proper divisors (257042).

283390 is a wasteful number, since it uses less digits than its factorization.

283390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1691.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 283390 is about 532.3438738259. The cubic root of 283390 is about 65.6842895776.

The spelling of 283390 in words is "two hundred eighty-three thousand, three hundred ninety".