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20132115 = 351970639
BaseRepresentation
bin100110011001…
…1000100010011
31101212211001220
41030303010103
520123211430
61555300123
7333056133
oct114630423
941784056
1020132115
1110400613
1268aa643
13422b5c3
142960ac3
151b7a110
hex1333113

20132115 has 16 divisors (see below), whose sum is σ = 33907200. Its totient is φ = 10171872.

The previous prime is 20132081. The next prime is 20132117. The reversal of 20132115 is 51123102.

It is not a de Polignac number, because 20132115 - 27 = 20131987 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 20132094 and 20132103.

It is not an unprimeable number, because it can be changed into a prime (20132117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35035 + ... + 35604.

It is an arithmetic number, because the mean of its divisors is an integer number (2119200).

Almost surely, 220132115 is an apocalyptic number.

20132115 is a deficient number, since it is larger than the sum of its proper divisors (13775085).

20132115 is a wasteful number, since it uses less digits than its factorization.

20132115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70666.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 20132115 is about 4486.8825480505. The cubic root of 20132115 is about 272.0381425389.

Adding to 20132115 its reverse (51123102), we get a palindrome (71255217).

The spelling of 20132115 in words is "twenty million, one hundred thirty-two thousand, one hundred fifteen".

Divisors: 1 3 5 15 19 57 95 285 70639 211917 353195 1059585 1342141 4026423 6710705 20132115