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238363345 = 5112393989
BaseRepresentation
bin11100011010100…
…10001011010001
3121121112010001001
432031102023101
5442010111340
635352542001
75623024603
oct1615221321
9547463031
10238363345
11112605a00
12679b1901
133a4c9bcc
142392b173
1515dd629a
hexe3522d1

238363345 has 12 divisors (see below), whose sum is σ = 314404020. Its totient is φ = 173354720.

The previous prime is 238363343. The next prime is 238363357. The reversal of 238363345 is 543363832.

It can be written as a sum of positive squares in 2 ways, for example, as 171924544 + 66438801 = 13112^2 + 8151^2 .

It is not a de Polignac number, because 238363345 - 21 = 238363343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (238363343) 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 11 ways as a sum of consecutive naturals, for example, 196390 + ... + 197599.

It is an arithmetic number, because the mean of its divisors is an integer number (26200335).

Almost surely, 2238363345 is an apocalyptic number.

It is an amenable number.

238363345 is a deficient number, since it is larger than the sum of its proper divisors (76040675).

238363345 is a wasteful number, since it uses less digits than its factorization.

238363345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394016 (or 394005 counting only the distinct ones).

The product of its digits is 155520, while the sum is 37.

The square root of 238363345 is about 15439.0202085495. The cubic root of 238363345 is about 620.0306479820.

The spelling of 238363345 in words is "two hundred thirty-eight million, three hundred sixty-three thousand, three hundred forty-five".

Divisors: 1 5 11 55 121 605 393989 1969945 4333879 21669395 47672669 238363345