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80854329 = 31719181461
BaseRepresentation
bin1001101000110…
…11110100111001
312122010211021210
410310123310321
5131144314304
612004553333
72001151623
oct464336471
9178124253
1080854329
1141705066
12230b2849
131399c1ca
14aa49c13
157171c89
hex4d1bd39

80854329 has 32 divisors (see below), whose sum is σ = 121080960. Its totient is φ = 47692800.

The previous prime is 80854273. The next prime is 80854343. The reversal of 80854329 is 92345808.

It is a happy number.

It is not a de Polignac number, because 80854329 - 211 = 80852281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80854369) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 175159 + ... + 175619.

It is an arithmetic number, because the mean of its divisors is an integer number (3783780).

Almost surely, 280854329 is an apocalyptic number.

It is an amenable number.

80854329 is a deficient number, since it is larger than the sum of its proper divisors (40226631).

80854329 is a wasteful number, since it uses less digits than its factorization.

80854329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 80854329 is about 8991.9035248383. The cubic root of 80854329 is about 432.4153402182.

The spelling of 80854329 in words is "eighty million, eight hundred fifty-four thousand, three hundred twenty-nine".

Divisors: 1 3 17 19 51 57 181 323 461 543 969 1383 3077 3439 7837 8759 9231 10317 23511 26277 58463 83441 148903 175389 250323 446709 1418497 1585379 4255491 4756137 26951443 80854329