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132479881 = 1093712113
BaseRepresentation
bin1111110010101…
…11101110001001
3100020021200020021
413321113232021
5232403324011
621051300441
73166026502
oct771275611
9306250207
10132479881
1168866106
123844a721
13215a6481
1413847ba9
15b96d471
hex7e57b89

132479881 has 4 divisors (see below), whose sum is σ = 132502932. Its totient is φ = 132456832.

The previous prime is 132479863. The next prime is 132479891. The reversal of 132479881 is 188974231.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 90554256 + 41925625 = 9516^2 + 6475^2 .

It is a cyclic number.

It is not a de Polignac number, because 132479881 - 25 = 132479849 is a prime.

It is a super-2 number, since 2×1324798812 = 35101837739548322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (132479821) 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, 4881 + ... + 16993.

It is an arithmetic number, because the mean of its divisors is an integer number (33125733).

Almost surely, 2132479881 is an apocalyptic number.

It is an amenable number.

132479881 is a deficient number, since it is larger than the sum of its proper divisors (23051).

132479881 is a wasteful number, since it uses less digits than its factorization.

132479881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23050.

The product of its digits is 96768, while the sum is 43.

The square root of 132479881 is about 11509.9904865295. The cubic root of 132479881 is about 509.7806066467.

The spelling of 132479881 in words is "one hundred thirty-two million, four hundred seventy-nine thousand, eight hundred eighty-one".

Divisors: 1 10937 12113 132479881