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12371089 = 89971433
BaseRepresentation
bin101111001100…
…010010010001
3212021111221111
4233030102101
511131333324
61121053321
7210103213
oct57142221
925244844
1012371089
116a8a645
124187241
132741b93
1419005b3
151145794
hexbcc491

12371089 has 8 divisors (see below), whose sum is σ = 12647880. Its totient is φ = 12097536.

The previous prime is 12371039. The next prime is 12371113. The reversal of 12371089 is 98017321.

It can be written as a sum of positive squares in 4 ways, for example, as 1710864 + 10660225 = 1308^2 + 3265^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12371089 - 27 = 12370961 is a prime.

It is a super-3 number, since 3×123710893 (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12371089.

It is not an unprimeable number, because it can be changed into a prime (12371039) 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 7 ways as a sum of consecutive naturals, for example, 7917 + ... + 9349.

It is an arithmetic number, because the mean of its divisors is an integer number (1580985).

Almost surely, 212371089 is an apocalyptic number.

It is an amenable number.

12371089 is a deficient number, since it is larger than the sum of its proper divisors (276791).

12371089 is an equidigital number, since it uses as much as digits as its factorization.

12371089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 12371089 is about 3517.2558906056. The cubic root of 12371089 is about 231.2788808341.

The spelling of 12371089 in words is "twelve million, three hundred seventy-one thousand, eighty-nine".

Divisors: 1 89 97 1433 8633 127537 139001 12371089