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229275761 = 11213145757
BaseRepresentation
bin11011010101001…
…11100001110001
3120222102102012212
431222213201301
5432143311021
634430101505
75452545311
oct1552474161
9528372185
10229275761
11108469300
126494a895
1338667740
1422643441
15151dd85b
hexdaa7871

229275761 has 12 divisors (see below), whose sum is σ = 271401396. Its totient is φ = 192397920.

The previous prime is 229275751. The next prime is 229275763. The reversal of 229275761 is 167572922.

It can be written as a sum of positive squares in 2 ways, for example, as 132135025 + 97140736 = 11495^2 + 9856^2 .

It is not a de Polignac number, because 229275761 - 222 = 225081457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (229275763) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71306 + ... + 74451.

It is an arithmetic number, because the mean of its divisors is an integer number (22616783).

Almost surely, 2229275761 is an apocalyptic number.

It is an amenable number.

229275761 is a deficient number, since it is larger than the sum of its proper divisors (42125635).

229275761 is a wasteful number, since it uses less digits than its factorization.

229275761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145792 (or 145781 counting only the distinct ones).

The product of its digits is 105840, while the sum is 41.

The square root of 229275761 is about 15141.8546089969. The cubic root of 229275761 is about 612.0487958943.

The spelling of 229275761 in words is "two hundred twenty-nine million, two hundred seventy-five thousand, seven hundred sixty-one".

Divisors: 1 11 13 121 143 1573 145757 1603327 1894841 17636597 20843251 229275761