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80807146 = 2741140779
BaseRepresentation
bin1001101000100…
…00010011101010
312122001102120021
410310100103222
5131141312041
612003551054
72000564230
oct464202352
9178042507
1080807146
1141682672
122308b48a
13139838a4
14aa36950
157162cd1
hex4d104ea

80807146 has 16 divisors (see below), whose sum is σ = 141906240. Its totient is φ = 33786720.

The previous prime is 80807143. The next prime is 80807183. The reversal of 80807146 is 64170808.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (80807141) by changing a digit.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69816 + ... + 70963.

It is an arithmetic number, because the mean of its divisors is an integer number (8869140).

Almost surely, 280807146 is an apocalyptic number.

80807146 is a deficient number, since it is larger than the sum of its proper divisors (61099094).

80807146 is a wasteful number, since it uses less digits than its factorization.

80807146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140829.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 80807146 is about 8989.2795039425. The cubic root of 80807146 is about 432.3312110473.

The spelling of 80807146 in words is "eighty million, eight hundred seven thousand, one hundred forty-six".

Divisors: 1 2 7 14 41 82 287 574 140779 281558 985453 1970906 5771939 11543878 40403573 80807146