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234348138 = 23271233787
BaseRepresentation
bin11011111011111…
…01111001101010
3121022222010012200
431331331321222
5434443120023
635130521030
75543632503
oct1575757152
9538863180
10234348138
11110313252
1266596176
133972244b
14231a3baa
1515891743
hexdf7de6a

234348138 has 48 divisors (see below), whose sum is σ = 517772736. Its totient is φ = 76587840.

The previous prime is 234348137. The next prime is 234348161. The reversal of 234348138 is 831843432.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (234348131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 297381 + ... + 298167.

It is an arithmetic number, because the mean of its divisors is an integer number (10786932).

Almost surely, 2234348138 is an apocalyptic number.

234348138 is an abundant number, since it is smaller than the sum of its proper divisors (283424598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

234348138 is a wasteful number, since it uses less digits than its factorization.

234348138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099 (or 1096 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 234348138 is about 15308.4335580098. The cubic root of 234348138 is about 616.5294630556.

The spelling of 234348138 in words is "two hundred thirty-four million, three hundred forty-eight thousand, one hundred thirty-eight".

Divisors: 1 2 3 6 9 18 71 142 213 233 426 466 639 699 787 1278 1398 1574 2097 2361 4194 4722 7083 14166 16543 33086 49629 55877 99258 111754 148887 167631 183371 297774 335262 366742 502893 550113 1005786 1100226 1650339 3300678 13019341 26038682 39058023 78116046 117174069 234348138