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283868280 = 23335673923
BaseRepresentation
bin10000111010110…
…111110001111000
3201210011000002000
4100322313301320
51040132241110
644100141000
710014561213
oct2072676170
9653130060
10283868280
11136266493
127b097760
1346a702c7
14299b477a
1519dc41c0
hex10eb7c78

283868280 has 128 divisors (see below), whose sum is σ = 960595200. Its totient is φ = 74549376.

The previous prime is 283868257. The next prime is 283868353. The reversal of 283868280 is 82868382.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70399 + ... + 74321.

It is an arithmetic number, because the mean of its divisors is an integer number (7504650).

Almost surely, 2283868280 is an apocalyptic number.

283868280 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 283868280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (480297600).

283868280 is an abundant number, since it is smaller than the sum of its proper divisors (676726920).

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

283868280 is a wasteful number, since it uses less digits than its factorization.

283868280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4010 (or 4000 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 45.

The square root of 283868280 is about 16848.3910211035. The cubic root of 283868280 is about 657.2122080918.

The spelling of 283868280 in words is "two hundred eighty-three million, eight hundred sixty-eight thousand, two hundred eighty".