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132397189 = 191693179
BaseRepresentation
bin1111110010000…
…11100010000101
3100020010110210121
413321003202011
5232343202224
621045421541
73165233431
oct771034205
9306113717
10132397189
1168809a71
123840a8b1
1321577942
14138259c1
15b953be4
hex7e43885

132397189 has 4 divisors (see below), whose sum is σ = 133090560. Its totient is φ = 131703820.

The previous prime is 132397183. The next prime is 132397217. The reversal of 132397189 is 981793231.

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.

It is a cyclic number.

It is not a de Polignac number, because 132397189 - 27 = 132397061 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 (132397183) 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, 346399 + ... + 346780.

It is an arithmetic number, because the mean of its divisors is an integer number (33272640).

Almost surely, 2132397189 is an apocalyptic number.

It is an amenable number.

132397189 is a deficient number, since it is larger than the sum of its proper divisors (693371).

132397189 is an equidigital number, since it uses as much as digits as its factorization.

132397189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693370.

The product of its digits is 81648, while the sum is 43.

The square root of 132397189 is about 11506.3977421259. The cubic root of 132397189 is about 509.6745187098.

The spelling of 132397189 in words is "one hundred thirty-two million, three hundred ninety-seven thousand, one hundred eighty-nine".

Divisors: 1 191 693179 132397189