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280272 = 2435839
BaseRepresentation
bin1000100011011010000
3112020110110
41010123100
532432042
610001320
72245056
oct1043320
9466413
10280272
11181633
12116240
139a755
14741d6
155809c
hex446d0

280272 has 20 divisors (see below), whose sum is σ = 724160. Its totient is φ = 93408.

The previous prime is 280253. The next prime is 280277. The reversal of 280272 is 272082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280277) by changing a digit.

280272 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 (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2872 + ... + 2967.

It is an arithmetic number, because the mean of its divisors is an integer number (36208).

2280272 is an apocalyptic number.

It is an amenable number.

280272 is an abundant number, since it is smaller than the sum of its proper divisors (443888).

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

280272 is a wasteful number, since it uses less digits than its factorization.

280272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5850 (or 5844 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 280272 is about 529.4072156667. The cubic root of 280272 is about 65.4425033964.

The spelling of 280272 in words is "two hundred eighty thousand, two hundred seventy-two".

Divisors: 1 2 3 4 6 8 12 16 24 48 5839 11678 17517 23356 35034 46712 70068 93424 140136 280272