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283960 = 23531229
BaseRepresentation
bin1000101010100111000
3112102112001
41011110320
533041320
610030344
72261605
oct1052470
9472461
10283960
11184386
121183b4
139c331
14756ac
155920a
hex45538

283960 has 32 divisors (see below), whose sum is σ = 662400. Its totient is φ = 109440.

The previous prime is 283957. The next prime is 283961. The reversal of 283960 is 69382.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (283961) 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, 1126 + ... + 1354.

It is an arithmetic number, because the mean of its divisors is an integer number (20700).

2283960 is an apocalyptic number.

283960 is a gapful number since it is divisible by the number (20) 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 283960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331200).

283960 is an abundant number, since it is smaller than the sum of its proper divisors (378440).

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

283960 is a wasteful number, since it uses less digits than its factorization.

283960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 267 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 283960 is about 532.8789731262. The cubic root of 283960 is about 65.7282983890.

The spelling of 283960 in words is "two hundred eighty-three thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 20 31 40 62 124 155 229 248 310 458 620 916 1145 1240 1832 2290 4580 7099 9160 14198 28396 35495 56792 70990 141980 283960