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229310449 = 1927972
BaseRepresentation
bin11011010101011…
…11111111110001
3120222111011210121
431222233333301
5432200413244
634430530241
75453051404
oct1552577761
9528434717
10229310449
11108492375
1264966981
133867a474
1422651d3b
15151e8c84
hexdaafff1

229310449 has 9 divisors (see below), whose sum is σ = 242318667. Its totient is φ = 216968904.

The previous prime is 229310429. The next prime is 229310479. The reversal of 229310449 is 944013922.

The square root of 229310449 is 15143.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 111197025 + 118113424 = 10545^2 + 10868^2 .

It is not a de Polignac number, because 229310449 - 29 = 229309937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (229310429) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 287319 + ... + 288115.

Almost surely, 2229310449 is an apocalyptic number.

229310449 is the 15143-rd square number.

229310449 is the 7572-nd centered octagonal number.

It is an amenable number.

229310449 is a deficient number, since it is larger than the sum of its proper divisors (13008218).

229310449 is an frugal number, since it uses more digits than its factorization.

With its predecessor (229310448) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (816).

229310449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1632 (or 816 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The cubic root of 229310449 is about 612.0796607328.

The spelling of 229310449 in words is "two hundred twenty-nine million, three hundred ten thousand, four hundred forty-nine".

Divisors: 1 19 361 797 15143 287717 635209 12068971 229310449