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118884081 = 339628027
BaseRepresentation
bin1110001011000…
…00011011110001
322021200221022010
413011200123301
5220413242311
615444033133
72642332551
oct705403361
9267627263
10118884081
116111a408
12339927a9
131b826014
1411b09161
15a684da6
hex71606f1

118884081 has 4 divisors (see below), whose sum is σ = 158512112. Its totient is φ = 79256052.

The previous prime is 118884067. The next prime is 118884089. The reversal of 118884081 is 180488811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 180488811 = 360162937.

It is not a de Polignac number, because 118884081 - 25 = 118884049 is a prime.

It is a super-2 number, since 2×1188840812 = 28266849430429122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (118884089) 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 3 ways as a sum of consecutive naturals, for example, 19814011 + ... + 19814016.

It is an arithmetic number, because the mean of its divisors is an integer number (39628028).

Almost surely, 2118884081 is an apocalyptic number.

It is an amenable number.

118884081 is a deficient number, since it is larger than the sum of its proper divisors (39628031).

118884081 is an equidigital number, since it uses as much as digits as its factorization.

118884081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39628030.

The product of its (nonzero) digits is 16384, while the sum is 39.

The square root of 118884081 is about 10903.3976814569. The cubic root of 118884081 is about 491.7087103502.

The spelling of 118884081 in words is "one hundred eighteen million, eight hundred eighty-four thousand, eighty-one".

Divisors: 1 3 39628027 118884081