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226845 = 325712
BaseRepresentation
bin110111011000011101
3102112011200
4313120131
524224340
64510113
71633233
oct673035
9375150
10226845
11145483
12ab339
137c338
145c953
1547330
hex3761d

226845 has 18 divisors (see below), whose sum is σ = 398814. Its totient is φ = 119280.

The previous prime is 226843. The next prime is 226871. The reversal of 226845 is 548622.

It can be written as a sum of positive squares in only one way, i.e., 181476 + 45369 = 426^2 + 213^2 .

It is not a de Polignac number, because 226845 - 21 = 226843 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3160 + ... + 3230.

2226845 is an apocalyptic number.

It is an amenable number.

226845 is a deficient number, since it is larger than the sum of its proper divisors (171969).

226845 is an equidigital number, since it uses as much as digits as its factorization.

226845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153 (or 79 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 226845 is about 476.2824792075. The cubic root of 226845 is about 60.9878144610.

The spelling of 226845 in words is "two hundred twenty-six thousand, eight hundred forty-five".

Divisors: 1 3 5 9 15 45 71 213 355 639 1065 3195 5041 15123 25205 45369 75615 226845