Search a number
-
+
275680 = 2551723
BaseRepresentation
bin1000011010011100000
3112000011101
41003103200
532310210
65524144
72225506
oct1032340
9460141
10275680
11179139
12113654
1398632
1472676
1556a3a
hex434e0

275680 has 24 divisors (see below), whose sum is σ = 651672. Its totient is φ = 110208.

The previous prime is 275677. The next prime is 275699. The reversal of 275680 is 86572.

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 nialpdrome in base 13.

It is a congruent number.

It is an unprimeable 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, 702 + ... + 1021.

It is an arithmetic number, because the mean of its divisors is an integer number (27153).

275680 is a Friedman number, since it can be written as (7*(2+0))^5-8^6, using all its digits and the basic arithmetic operations.

2275680 is an apocalyptic number.

275680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

275680 is an abundant number, since it is smaller than the sum of its proper divisors (375992).

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

275680 is a wasteful number, since it uses less digits than its factorization.

275680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1738 (or 1730 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 275680 is about 525.0523783395. The cubic root of 275680 is about 65.0831283560.

The spelling of 275680 in words is "two hundred seventy-five thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 1723 3446 6892 8615 13784 17230 27568 34460 55136 68920 137840 275680