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215114315 = 51329139821
BaseRepresentation
bin11001101001001…
…10001001001011
3112222202221100212
430310212021023
5420032124230
633202351335
75221304303
oct1464461113
9488687325
10215114315
11100476629
126005b54b
13357499a0
14207d8603
1513d42895
hexcd2624b

215114315 has 32 divisors (see below), whose sum is σ = 290001600. Its totient is φ = 152087040.

The previous prime is 215114299. The next prime is 215114321. The reversal of 215114315 is 513411512.

It is not a de Polignac number, because 215114315 - 24 = 215114299 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 261605 + ... + 262425.

It is an arithmetic number, because the mean of its divisors is an integer number (9062550).

Almost surely, 2215114315 is an apocalyptic number.

215114315 is a deficient number, since it is larger than the sum of its proper divisors (74887285).

215114315 is a wasteful number, since it uses less digits than its factorization.

215114315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007.

The product of its digits is 600, while the sum is 23.

The square root of 215114315 is about 14666.7758897448. The cubic root of 215114315 is about 599.1787978541.

Adding to 215114315 its reverse (513411512), we get a palindrome (728525827).

The spelling of 215114315 in words is "two hundred fifteen million, one hundred fourteen thousand, three hundred fifteen".

Divisors: 1 5 13 29 65 139 145 377 695 821 1807 1885 4031 4105 9035 10673 20155 23809 52403 53365 114119 119045 262015 309517 570595 1483547 1547585 3309451 7417735 16547255 43022863 215114315