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10218087 = 32113853
BaseRepresentation
bin100110111110…
…101001100111
3201020010120200
4212332221213
510103434322
61003001543
7152565225
oct46765147
921203520
1010218087
11584a000
1235092b3
132169c09
1414ddb15
15d6c8ac
hex9bea67

10218087 has 24 divisors (see below), whose sum is σ = 16253328. Its totient is φ = 6185520.

The previous prime is 10218079. The next prime is 10218101. The reversal of 10218087 is 78081201.

It is not a de Polignac number, because 10218087 - 23 = 10218079 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10218087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10218007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11553 + ... + 12405.

It is an arithmetic number, because the mean of its divisors is an integer number (677222).

Almost surely, 210218087 is an apocalyptic number.

10218087 is a deficient number, since it is larger than the sum of its proper divisors (6035241).

10218087 is an equidigital number, since it uses as much as digits as its factorization.

10218087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892 (or 867 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 10218087 is about 3196.5742600478. The cubic root of 10218087 is about 216.9984001807.

Adding to 10218087 its reverse (78081201), we get a palindrome (88299288).

The spelling of 10218087 in words is "ten million, two hundred eighteen thousand, eighty-seven".

Divisors: 1 3 9 11 33 99 121 363 853 1089 1331 2559 3993 7677 9383 11979 28149 84447 103213 309639 928917 1135343 3406029 10218087