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80371071 = 32114871667
BaseRepresentation
bin1001100101001…
…01110101111111
312121020021101100
410302211311333
5131033333241
611550344143
71664066664
oct462456577
9177207340
1080371071
1141404a80
1222abb053
1313860261
14a961a6b
1570c89b6
hex4ca5d7f

80371071 has 24 divisors (see below), whose sum is σ = 126981504. Its totient is φ = 48580560.

The previous prime is 80371033. The next prime is 80371079. The reversal of 80371071 is 17017308.

It is not a de Polignac number, because 80371071 - 213 = 80362879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80371079) 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 23 ways as a sum of consecutive naturals, for example, 47380 + ... + 49046.

It is an arithmetic number, because the mean of its divisors is an integer number (5290896).

Almost surely, 280371071 is an apocalyptic number.

80371071 is a deficient number, since it is larger than the sum of its proper divisors (46610433).

80371071 is a wasteful number, since it uses less digits than its factorization.

80371071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2171 (or 2168 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

The square root of 80371071 is about 8964.9914110388. The cubic root of 80371071 is about 431.5521174730.

Adding to 80371071 its reverse (17017308), we get a palindrome (97388379).

The spelling of 80371071 in words is "eighty million, three hundred seventy-one thousand, seventy-one".

Divisors: 1 3 9 11 33 99 487 1461 1667 4383 5001 5357 15003 16071 18337 48213 55011 165033 811829 2435487 7306461 8930119 26790357 80371071