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255838 = 21129401
BaseRepresentation
bin111110011101011110
3110222221111
4332131132
531141323
65252234
72113612
oct763536
9428844
10255838
11165240
1210407a
138c5ab
1469342
1550c0d
hex3e75e

255838 has 16 divisors (see below), whose sum is σ = 434160. Its totient is φ = 112000.

The previous prime is 255803. The next prime is 255839. The reversal of 255838 is 838552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438 + ... + 838.

It is an arithmetic number, because the mean of its divisors is an integer number (27135).

2255838 is an apocalyptic number.

255838 is a deficient number, since it is larger than the sum of its proper divisors (178322).

255838 is a wasteful number, since it uses less digits than its factorization.

255838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443.

The product of its digits is 9600, while the sum is 31.

The square root of 255838 is about 505.8043099856. The cubic root of 255838 is about 63.4826455561.

The spelling of 255838 in words is "two hundred fifty-five thousand, eight hundred thirty-eight".

Divisors: 1 2 11 22 29 58 319 401 638 802 4411 8822 11629 23258 127919 255838