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13242015 = 335472087
BaseRepresentation
bin110010100000…
…111010011111
3220220202122000
4302200322133
511342221030
61151453343
7220361313
oct62407237
926822560
1013242015
117524a16
124527253
132988417
141a89b43
151268860
hexca0e9f

13242015 has 32 divisors (see below), whose sum is σ = 24053760. Its totient is φ = 6908832.

The previous prime is 13242013. The next prime is 13242029. The reversal of 13242015 is 51024231.

It is not a de Polignac number, because 13242015 - 21 = 13242013 is a prime.

It is a super-2 number, since 2×132420152 = 350701922520450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13242011) by changing a digit.

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, 5302 + ... + 7388.

It is an arithmetic number, because the mean of its divisors is an integer number (751680).

Almost surely, 213242015 is an apocalyptic number.

13242015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13242015 is a deficient number, since it is larger than the sum of its proper divisors (10811745).

13242015 is a wasteful number, since it uses less digits than its factorization.

13242015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2148 (or 2142 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 13242015 is about 3638.9579552394. The cubic root of 13242015 is about 236.5836304168.

Adding to 13242015 its reverse (51024231), we get a palindrome (64266246).

The spelling of 13242015 in words is "thirteen million, two hundred forty-two thousand, fifteen".

Divisors: 1 3 5 9 15 27 45 47 135 141 235 423 705 1269 2087 2115 6261 6345 10435 18783 31305 56349 93915 98089 281745 294267 490445 882801 1471335 2648403 4414005 13242015