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87982132 = 2273142219
BaseRepresentation
bin1010011111010…
…00000000110100
320010112221210111
411033220000310
5140010412012
612421432404
72115556450
oct517500064
9203487714
1087982132
1145733307
122556b704
13152c6644
14b983660
157acdba7
hex53e8034

87982132 has 12 divisors (see below), whose sum is σ = 175964320. Its totient is φ = 37706616.

The previous prime is 87982127. The next prime is 87982133. The reversal of 87982132 is 23128978.

87982132 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87982133) by changing a digit.

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

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1571082 + ... + 1571137.

Almost surely, 287982132 is an apocalyptic number.

It is an amenable number.

87982132 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87982132 is a wasteful number, since it uses less digits than its factorization.

87982132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3142230 (or 3142228 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 87982132 is about 9379.8791036985. The cubic root of 87982132 is about 444.7659114729.

The spelling of 87982132 in words is "eighty-seven million, nine hundred eighty-two thousand, one hundred thirty-two".

Divisors: 1 2 4 7 14 28 3142219 6284438 12568876 21995533 43991066 87982132