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115672071 = 338557357
BaseRepresentation
bin1101110010100…
…00010000000111
322001122202020210
412321100100013
5214103001241
615251130503
72603124234
oct671202007
9261582223
10115672071
115a326159
12328a3a33
131ac70018
141151078b
15a24d316
hex6e50407

115672071 has 4 divisors (see below), whose sum is σ = 154229432. Its totient is φ = 77114712.

The previous prime is 115672033. The next prime is 115672079. The reversal of 115672071 is 170276511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 170276511 = 356758837.

It is not a de Polignac number, because 115672071 - 213 = 115663879 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 (115672079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19278676 + ... + 19278681.

It is an arithmetic number, because the mean of its divisors is an integer number (38557358).

Almost surely, 2115672071 is an apocalyptic number.

115672071 is a deficient number, since it is larger than the sum of its proper divisors (38557361).

115672071 is an equidigital number, since it uses as much as digits as its factorization.

115672071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38557360.

The product of its (nonzero) digits is 2940, while the sum is 30.

The square root of 115672071 is about 10755.0951181289. The cubic root of 115672071 is about 487.2398906957.

The spelling of 115672071 in words is "one hundred fifteen million, six hundred seventy-two thousand, seventy-one".

Divisors: 1 3 38557357 115672071