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108290281 = 1121018861
BaseRepresentation
bin1100111010001…
…10000011101001
321112202201100011
412131012003221
5210210242111
614425011521
72453311051
oct635060351
9245681304
10108290281
1156144100
1230323ba1
13195870b8
141054c561
159791021
hex67460e9

108290281 has 12 divisors (see below), whose sum is σ = 120221892. Its totient is φ = 97460000.

The previous prime is 108290267. The next prime is 108290341. The reversal of 108290281 is 182092801.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 105781225 + 2509056 = 10285^2 + 1584^2 .

It is not a de Polignac number, because 108290281 - 213 = 108282089 is a prime.

It is a super-2 number, since 2×1082902812 = 23453569918117922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108290251) 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 11 ways as a sum of consecutive naturals, for example, 7791 + ... + 16651.

It is an arithmetic number, because the mean of its divisors is an integer number (10018491).

Almost surely, 2108290281 is an apocalyptic number.

108290281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

108290281 is a deficient number, since it is larger than the sum of its proper divisors (11931611).

108290281 is a wasteful number, since it uses less digits than its factorization.

108290281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8984 (or 8973 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 108290281 is about 10406.2616246181. The cubic root of 108290281 is about 476.6465935005.

The spelling of 108290281 in words is "one hundred eight million, two hundred ninety thousand, two hundred eighty-one".

Divisors: 1 11 101 121 1111 8861 12221 97471 894961 1072181 9844571 108290281