Search a number
-
+
238278201 = 3771159811
BaseRepresentation
bin11100011001111…
…01011000111001
3121121100210020120
432030331120321
5441444400301
635351043453
75622221430
oct1614753071
9547323216
10238278201
11112557a37
1267970589
133a49a225
1423908117
1515dbae36
hexe33d639

238278201 has 16 divisors (see below), whose sum is σ = 368206848. Its totient is φ = 134240400.

The previous prime is 238278199. The next prime is 238278233. The reversal of 238278201 is 102872832.

It is not a de Polignac number, because 238278201 - 21 = 238278199 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (238278701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78415 + ... + 81396.

It is an arithmetic number, because the mean of its divisors is an integer number (23012928).

Almost surely, 2238278201 is an apocalyptic number.

238278201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

238278201 is a deficient number, since it is larger than the sum of its proper divisors (129928647).

238278201 is a wasteful number, since it uses less digits than its factorization.

238278201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159892.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 238278201 is about 15436.2625333984. The cubic root of 238278201 is about 619.9568136759.

The spelling of 238278201 in words is "two hundred thirty-eight million, two hundred seventy-eight thousand, two hundred one".

Divisors: 1 3 7 21 71 213 497 1491 159811 479433 1118677 3356031 11346581 34039743 79426067 238278201