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228271125 = 3531075689
BaseRepresentation
bin11011001101100…
…10010000010101
3120220112101010010
431212302100111
5431414134000
634352350433
75441162325
oct1546622025
9526471103
10228271125
11107942525
1264545419
13383a5394
1422461285
1515090d50
hexd9b2415

228271125 has 32 divisors (see below), whose sum is σ = 383460480. Its totient is φ = 120585600.

The previous prime is 228271123. The next prime is 228271139. The reversal of 228271125 is 521172822.

It is not a de Polignac number, because 228271125 - 21 = 228271123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 228271092 and 228271101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228271123) 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 31 ways as a sum of consecutive naturals, for example, 37281 + ... + 42969.

It is an arithmetic number, because the mean of its divisors is an integer number (11983140).

Almost surely, 2228271125 is an apocalyptic number.

228271125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

228271125 is a deficient number, since it is larger than the sum of its proper divisors (155189355).

228271125 is a wasteful number, since it uses less digits than its factorization.

228271125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5814 (or 5804 counting only the distinct ones).

The product of its digits is 4480, while the sum is 30.

The square root of 228271125 is about 15108.6440490204. The cubic root of 228271125 is about 611.1535325617.

The spelling of 228271125 in words is "two hundred twenty-eight million, two hundred seventy-one thousand, one hundred twenty-five".

Divisors: 1 3 5 15 25 75 107 125 321 375 535 1605 2675 5689 8025 13375 17067 28445 40125 85335 142225 426675 608723 711125 1826169 2133375 3043615 9130845 15218075 45654225 76090375 228271125