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238404125 = 531907233
BaseRepresentation
bin11100011010111…
…00001000011101
3121121121011222102
432031130020131
5442012413000
635353454445
75623254521
oct1615341035
9547534872
10238404125
11112633603
1267a11425
133a51263b
142393bd81
1515de33d5
hexe35c21d

238404125 has 8 divisors (see below), whose sum is σ = 297528504. Its totient is φ = 190723200.

The previous prime is 238404119. The next prime is 238404139. The reversal of 238404125 is 521404832.

It is a happy number.

238404125 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 4 ways, for example, as 14273284 + 224130841 = 3778^2 + 14971^2 .

It is not a de Polignac number, because 238404125 - 220 = 237355549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 953492 + ... + 953741.

It is an arithmetic number, because the mean of its divisors is an integer number (37191063).

Almost surely, 2238404125 is an apocalyptic number.

238404125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

238404125 is a deficient number, since it is larger than the sum of its proper divisors (59124379).

238404125 is an equidigital number, since it uses as much as digits as its factorization.

238404125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1907248 (or 1907238 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 238404125 is about 15440.3408317304. The cubic root of 238404125 is about 620.0660049396.

Adding to 238404125 its reverse (521404832), we get a palindrome (759808957).

The spelling of 238404125 in words is "two hundred thirty-eight million, four hundred four thousand, one hundred twenty-five".

Divisors: 1 5 25 125 1907233 9536165 47680825 238404125