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238471225 = 5215760757
BaseRepresentation
bin11100011011011…
…00100000111001
3121121201121000121
432031230200321
5442022034400
635355133241
75623654246
oct1615544071
9547647017
10238471225
11112679a63
1267a44221
133a537045
14239585cd
1515e0821a
hexe36c839

238471225 has 12 divisors (see below), whose sum is σ = 297592684. Its totient is φ = 189558720.

The previous prime is 238471213. The next prime is 238471229. The reversal of 238471225 is 522174832.

It is a happy number.

238471225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 10582009 + 227889216 = 3253^2 + 15096^2 .

It is not a de Polignac number, because 238471225 - 25 = 238471193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238471229) 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, 26454 + ... + 34303.

Almost surely, 2238471225 is an apocalyptic number.

238471225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

238471225 is a deficient number, since it is larger than the sum of its proper divisors (59121459).

238471225 is a wasteful number, since it uses less digits than its factorization.

238471225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60924 (or 60919 counting only the distinct ones).

The product of its digits is 26880, while the sum is 34.

The square root of 238471225 is about 15442.5135583557. The cubic root of 238471225 is about 620.1241730132.

The spelling of 238471225 in words is "two hundred thirty-eight million, four hundred seventy-one thousand, two hundred twenty-five".

Divisors: 1 5 25 157 785 3925 60757 303785 1518925 9538849 47694245 238471225