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83132680 = 2352078317
BaseRepresentation
bin1001111010010…
…00000100001000
312210102120121011
410331020010020
5132240221210
612125453304
72026421221
oct475100410
9183376534
1083132680
1142a208a4
1223a11234
13142b9247
14b080248
157471d8a
hex4f48108

83132680 has 16 divisors (see below), whose sum is σ = 187048620. Its totient is φ = 33253056.

The previous prime is 83132677. The next prime is 83132681. The reversal of 83132680 is 8623138.

It can be written as a sum of positive squares in 2 ways, for example, as 82919236 + 213444 = 9106^2 + 462^2 .

It is a super-2 number, since 2×831326802 = 13822084967964800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (83132681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1039119 + ... + 1039198.

Almost surely, 283132680 is an apocalyptic number.

It is an amenable number.

83132680 is an abundant number, since it is smaller than the sum of its proper divisors (103915940).

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

83132680 is a wasteful number, since it uses less digits than its factorization.

83132680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2078328 (or 2078324 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 83132680 is about 9117.7124324032. The cubic root of 83132680 is about 436.4393769517.

The spelling of 83132680 in words is "eighty-three million, one hundred thirty-two thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 2078317 4156634 8313268 10391585 16626536 20783170 41566340 83132680