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118805081 = 197188069
BaseRepresentation
bin1110001010011…
…01001001011001
322021112220221012
413011031021121
5220403230311
615442223305
72641553333
oct705151131
9267486835
10118805081
116107601a
1233954b35
131b7c9085
1411ac8453
15a66b78b
hex714d259

118805081 has 8 divisors (see below), whose sum is σ = 126820800. Its totient is φ = 110965680.

The previous prime is 118805059. The next prime is 118805131. The reversal of 118805081 is 180508811.

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 118805081 - 210 = 118804057 is a prime.

It is a super-2 number, since 2×1188050812 = 28229294542833122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118805021) 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 7 ways as a sum of consecutive naturals, for example, 42686 + ... + 45383.

It is an arithmetic number, because the mean of its divisors is an integer number (15852600).

Almost surely, 2118805081 is an apocalyptic number.

It is an amenable number.

118805081 is a deficient number, since it is larger than the sum of its proper divisors (8015719).

118805081 is an equidigital number, since it uses as much as digits as its factorization.

118805081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88159.

The product of its (nonzero) digits is 2560, while the sum is 32.

The square root of 118805081 is about 10899.7743554626. The cubic root of 118805081 is about 491.5997706298.

It can be divided in two parts, 11880 and 5081, that added together give a palindrome (16961).

The spelling of 118805081 in words is "one hundred eighteen million, eight hundred five thousand, eighty-one".

Divisors: 1 19 71 1349 88069 1673311 6252899 118805081