Search a number
-
+
136243015 = 51719292909
BaseRepresentation
bin10000001111011…
…10011101000111
3100111100212021121
420013232131013
5234334234030
621304054411
73243021646
oct1007563507
9314325247
10136243015
116a9a6437
1239764407
13222c328c
141414735d
15be6347a
hex81ee747

136243015 has 32 divisors (see below), whose sum is σ = 188568000. Its totient is φ = 93800448.

The previous prime is 136242973. The next prime is 136243021. The reversal of 136243015 is 510342631.

It is a cyclic number.

It is not a de Polignac number, because 136243015 - 211 = 136240967 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45381 + ... + 48289.

It is an arithmetic number, because the mean of its divisors is an integer number (5892750).

Almost surely, 2136243015 is an apocalyptic number.

136243015 is a deficient number, since it is larger than the sum of its proper divisors (52324985).

136243015 is a wasteful number, since it uses less digits than its factorization.

136243015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2979.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 136243015 is about 11672.3183215675. The cubic root of 136243015 is about 514.5624397898.

Adding to 136243015 its reverse (510342631), we get a palindrome (646585646).

The spelling of 136243015 in words is "one hundred thirty-six million, two hundred forty-three thousand, fifteen".

Divisors: 1 5 17 19 29 85 95 145 323 493 551 1615 2465 2755 2909 9367 14545 46835 49453 55271 84361 247265 276355 421805 939607 1434137 1602859 4698035 7170685 8014295 27248603 136243015