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12815007 = 319322133
BaseRepresentation
bin110000111000…
…101010011111
3220010001212220
4300320222133
511240040012
61134400423
7213632352
oct60705237
926101786
1012815007
117263117
124360113
132868c5a
1419b8299
1511d208c
hexc38a9f

12815007 has 8 divisors (see below), whose sum is σ = 17175984. Its totient is φ = 8498688.

The previous prime is 12814993. The next prime is 12815017. The reversal of 12815007 is 70051821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12815007 - 28 = 12814751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12815017) 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 7 ways as a sum of consecutive naturals, for example, 10488 + ... + 11645.

It is an arithmetic number, because the mean of its divisors is an integer number (2146998).

Almost surely, 212815007 is an apocalyptic number.

12815007 is a deficient number, since it is larger than the sum of its proper divisors (4360977).

12815007 is a wasteful number, since it uses less digits than its factorization.

12815007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22329.

The product of its (nonzero) digits is 560, while the sum is 24.

The square root of 12815007 is about 3579.8054416406. The cubic root of 12815007 is about 234.0128015496.

Adding to 12815007 its reverse (70051821), we get a palindrome (82866828).

The spelling of 12815007 in words is "twelve million, eight hundred fifteen thousand, seven".

Divisors: 1 3 193 579 22133 66399 4271669 12815007