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255104239 = 1331633013
BaseRepresentation
bin11110011010010…
…01010011101111
3122210000122020011
433031021103233
51010301313424
641151434051
76215231065
oct1715112357
9583018204
10255104239
11120aaa655
1271525927
1340b0ba70
1425c48035
15175e1694
hexf3494ef

255104239 has 8 divisors (see below), whose sum is σ = 283590272. Its totient is φ = 227884320.

The previous prime is 255104237. The next prime is 255104249. The reversal of 255104239 is 932401552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 255104239 - 21 = 255104237 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 255104239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255104237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316104 + ... + 316909.

It is an arithmetic number, because the mean of its divisors is an integer number (35448784).

Almost surely, 2255104239 is an apocalyptic number.

255104239 is a deficient number, since it is larger than the sum of its proper divisors (28486033).

255104239 is a wasteful number, since it uses less digits than its factorization.

255104239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633057.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 255104239 is about 15971.9829388840. The cubic root of 255104239 is about 634.2189657543.

The spelling of 255104239 in words is "two hundred fifty-five million, one hundred four thousand, two hundred thirty-nine".

Divisors: 1 13 31 403 633013 8229169 19623403 255104239