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12500913 = 36168311
BaseRepresentation
bin101111101011…
…111110110001
3212112010000210
4233223332301
511200012123
61123534333
7211153545
oct57537661
925463023
1012500913
117069137
12422a3a9
132788cb9
141935a25
15116de93
hexbebfb1

12500913 has 8 divisors (see below), whose sum is σ = 16941376. Its totient is φ = 8197200.

The previous prime is 12500893. The next prime is 12500921. The reversal of 12500913 is 31900521.

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

It is not a de Polignac number, because 12500913 - 26 = 12500849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12500913.

It is not an unprimeable number, because it can be changed into a prime (12500953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33973 + ... + 34338.

It is an arithmetic number, because the mean of its divisors is an integer number (2117672).

Almost surely, 212500913 is an apocalyptic number.

It is an amenable number.

12500913 is a deficient number, since it is larger than the sum of its proper divisors (4440463).

12500913 is an equidigital number, since it uses as much as digits as its factorization.

12500913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68375.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 12500913 is about 3535.6630212734. The cubic root of 12500913 is about 232.0850919039.

The spelling of 12500913 in words is "twelve million, five hundred thousand, nine hundred thirteen".

Divisors: 1 3 61 183 68311 204933 4166971 12500913