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132879971 = 718982853
BaseRepresentation
bin1111110101110…
…01011001100011
3100021001000001102
413322321121203
5233004124341
621104025015
73202314110
oct772713143
9307030042
10132879971
1169009764
123860216b
13216b6603
141390d907
15b9ebc9b
hex7eb9663

132879971 has 4 divisors (see below), whose sum is σ = 151862832. Its totient is φ = 113897112.

The previous prime is 132879953. The next prime is 132879997. The reversal of 132879971 is 179978231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 179978231 = 334753773.

It is not a de Polignac number, because 132879971 - 226 = 65771107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (132879911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9491420 + ... + 9491433.

It is an arithmetic number, because the mean of its divisors is an integer number (37965708).

Almost surely, 2132879971 is an apocalyptic number.

132879971 is a deficient number, since it is larger than the sum of its proper divisors (18982861).

132879971 is an equidigital number, since it uses as much as digits as its factorization.

132879971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18982860.

The product of its digits is 190512, while the sum is 47.

The square root of 132879971 is about 11527.3575029145. The cubic root of 132879971 is about 510.2932710274.

The spelling of 132879971 in words is "one hundred thirty-two million, eight hundred seventy-nine thousand, nine hundred seventy-one".

Divisors: 1 7 18982853 132879971