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12812093 = 78772087
BaseRepresentation
bin110000110111…
…111100111101
3220002220212222
4300313330331
511234441333
61134335125
7213621020
oct60677475
926086788
1012812093
117260a08
12435a4a5
132867828
1419b71b7
1511d1298
hexc37f3d

12812093 has 8 divisors (see below), whose sum is σ = 14666112. Its totient is φ = 10964016.

The previous prime is 12812087. The next prime is 12812117. The reversal of 12812093 is 39021821.

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

It is not a de Polignac number, because 12812093 - 24 = 12812077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12812893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5096 + ... + 7182.

It is an arithmetic number, because the mean of its divisors is an integer number (1833264).

Almost surely, 212812093 is an apocalyptic number.

It is an amenable number.

12812093 is a deficient number, since it is larger than the sum of its proper divisors (1854019).

12812093 is an equidigital number, since it uses as much as digits as its factorization.

12812093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2971.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 12812093 is about 3579.3984131415. The cubic root of 12812093 is about 233.9950628417.

It can be divided in two parts, 128 and 12093, that added together give a palindrome (12221).

The spelling of 12812093 in words is "twelve million, eight hundred twelve thousand, ninety-three".

Divisors: 1 7 877 2087 6139 14609 1830299 12812093