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238812245 = 5729376359
BaseRepresentation
bin11100011101111…
…11110001010101
3121122100220210222
432032333301111
5442113442440
635410324125
75626604420
oct1616776125
9548326728
10238812245
111128921a1
1267b89645
133a626329
1423a069b7
1515e742b5
hexe3bfc55

238812245 has 32 divisors (see below), whose sum is σ = 348019200. Its totient is φ = 153812736.

The previous prime is 238812241. The next prime is 238812247. The reversal of 238812245 is 542218832.

It is not a de Polignac number, because 238812245 - 22 = 238812241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238812241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34376 + ... + 40734.

It is an arithmetic number, because the mean of its divisors is an integer number (10875600).

Almost surely, 2238812245 is an apocalyptic number.

It is an amenable number.

238812245 is a deficient number, since it is larger than the sum of its proper divisors (109206955).

238812245 is a wasteful number, since it uses less digits than its factorization.

238812245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6437.

The product of its digits is 30720, while the sum is 35.

The square root of 238812245 is about 15453.5512099970. The cubic root of 238812245 is about 620.4196300727.

The spelling of 238812245 in words is "two hundred thirty-eight million, eight hundred twelve thousand, two hundred forty-five".

Divisors: 1 5 7 29 35 37 145 185 203 259 1015 1073 1295 5365 6359 7511 31795 37555 44513 184411 222565 235283 922055 1176415 1290877 1646981 6454385 6823207 8234905 34116035 47762449 238812245