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108994081 = 73476761
BaseRepresentation
bin1100111111100…
…01111000100001
321121002110202211
412133301320201
5210400302311
614452042121
72462302000
oct637617041
9247073684
10108994081
1156584959
1230603341
1319772551
1410692c37
15987e821
hex67f1e21

108994081 has 16 divisors (see below), whose sum is σ = 129830400. Its totient is φ = 91422240.

The previous prime is 108994073. The next prime is 108994087. The reversal of 108994081 is 180499801.

It is not a de Polignac number, because 108994081 - 23 = 108994073 is a prime.

It is a super-2 number, since 2×1089940812 = 23759419386069122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (108994087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12741 + ... + 19501.

It is an arithmetic number, because the mean of its divisors is an integer number (8114400).

Almost surely, 2108994081 is an apocalyptic number.

It is an amenable number.

108994081 is a deficient number, since it is larger than the sum of its proper divisors (20836319).

108994081 is an frugal number, since it uses more digits than its factorization.

108994081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6829 (or 6815 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 108994081 is about 10440.0230363731. The cubic root of 108994081 is about 477.6769713991.

The spelling of 108994081 in words is "one hundred eight million, nine hundred ninety-four thousand, eighty-one".

Divisors: 1 7 47 49 329 343 2303 6761 16121 47327 317767 331289 2224369 2319023 15570583 108994081