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228140241 = 3743467541
BaseRepresentation
bin11011001100100…
…10010011010001
3120220021201120120
431212102103101
5431400441431
634345500453
75440105620
oct1546222321
9526251516
10228140241
1110786315a
12644a1729
133835a934
14224296b7
1515067196
hexd9924d1

228140241 has 32 divisors (see below), whose sum is σ = 357147648. Its totient is φ = 126826560.

The previous prime is 228140219. The next prime is 228140251. The reversal of 228140241 is 142041822.

It is not a de Polignac number, because 228140241 - 210 = 228139217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228140251) 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, 421431 + ... + 421971.

It is an arithmetic number, because the mean of its divisors is an integer number (11160864).

Almost surely, 2228140241 is an apocalyptic number.

228140241 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

228140241 is a deficient number, since it is larger than the sum of its proper divisors (129007407).

228140241 is a wasteful number, since it uses less digits than its factorization.

228140241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061.

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 228140241 is about 15104.3120002203. The cubic root of 228140241 is about 611.0367043648.

The spelling of 228140241 in words is "two hundred twenty-eight million, one hundred forty thousand, two hundred forty-one".

Divisors: 1 3 7 21 43 129 301 467 541 903 1401 1623 3269 3787 9807 11361 20081 23263 60243 69789 140567 162841 252647 421701 488523 757941 1768529 5305587 10863821 32591463 76046747 228140241