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255103220 = 22561211991
BaseRepresentation
bin11110011010010…
…01000011110100
3122210000120211102
433031021003310
51010301300340
641151425232
76215225111
oct1715110364
9583016742
10255103220
11120aa9909
1271525218
1340b0b468
1425c47908
15175e1215
hexf3490f4

255103220 has 48 divisors (see below), whose sum is σ = 547631616. Its totient is φ = 99792000.

The previous prime is 255103193. The next prime is 255103223. The reversal of 255103220 is 22301552.

255103220 is digitally balanced in base 2, base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

255103220 is strictly pandigital in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 255103192 and 255103201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255103223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256925 + ... + 257915.

It is an arithmetic number, because the mean of its divisors is an integer number (11408992).

Almost surely, 2255103220 is an apocalyptic number.

255103220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255103220 is an abundant number, since it is smaller than the sum of its proper divisors (292528396).

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

255103220 is a wasteful number, since it uses less digits than its factorization.

255103220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272 (or 1270 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 255103220 is about 15971.9510392438. The cubic root of 255103220 is about 634.2181213021.

Adding to 255103220 its reverse (22301552), we get a palindrome (277404772).

The spelling of 255103220 in words is "two hundred fifty-five million, one hundred three thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 61 122 211 244 305 422 610 844 991 1055 1220 1982 2110 3964 4220 4955 9910 12871 19820 25742 51484 60451 64355 120902 128710 209101 241804 257420 302255 418202 604510 836404 1045505 1209020 2091010 4182020 12755161 25510322 51020644 63775805 127551610 255103220