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118238965 = 5131819061
BaseRepresentation
bin1110000110000…
…10111011110101
322020111011100221
413003002323311
5220232121330
615422134341
72634005005
oct703027365
9266434327
10118238965
1160819759
12337213b1
131b65b4b0
14119bc005
15a5a8b7a
hex70c2ef5

118238965 has 8 divisors (see below), whose sum is σ = 152801208. Its totient is φ = 87314880.

The previous prime is 118238963. The next prime is 118238969. The reversal of 118238965 is 569832811.

It can be written as a sum of positive squares in 4 ways, for example, as 2439844 + 115799121 = 1562^2 + 10761^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 118238965 - 21 = 118238963 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118238963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 909466 + ... + 909595.

It is an arithmetic number, because the mean of its divisors is an integer number (19100151).

Almost surely, 2118238965 is an apocalyptic number.

It is an amenable number.

118238965 is a deficient number, since it is larger than the sum of its proper divisors (34562243).

118238965 is a wasteful number, since it uses less digits than its factorization.

118238965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819079.

The product of its digits is 103680, while the sum is 43.

The square root of 118238965 is about 10873.7741837873. The cubic root of 118238965 is about 490.8176892796.

The spelling of 118238965 in words is "one hundred eighteen million, two hundred thirty-eight thousand, nine hundred sixty-five".

Divisors: 1 5 13 65 1819061 9095305 23647793 118238965