283388 has 24 divisors (see below), whose sum is σ = 588000. Its totient is φ = 116928.

The previous prime is 283369. The next prime is 283397. The reversal of 283388 is 883382.

It is a d-powerful number, because it can be written as 2⁸ + 8² + 3⁶ + 3⁹ + 8³ + 8⁶ .

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 283388.

It is an unprimeable number.

283388 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, 638 + ... + 986.

It is an arithmetic number, because the mean of its divisors is an integer number (24500).

2²⁸³³⁸⁸ is an apocalyptic number.

283388 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 283388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (294000).

283388 is an abundant number, since it is smaller than the sum of its proper divisors (304612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

283388 is a wasteful number, since it uses less digits than its factorization.

283388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389 (or 387 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 283388 is about 532.3419953376. The cubic root of 283388 is about 65.6841350569.

It can be divided in two parts, 28 and 3388, that multiplied together give a square (94864 = 308²).

The spelling of 283388 in words is "two hundred eighty-three thousand, three hundred eighty-eight".