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80497143 = 328944127
BaseRepresentation
bin1001100110001…
…00100111110111
312121110200022200
410303010213313
5131101402033
611553155543
71665133356
oct463044767
9177420280
1080497143
1141490771
1222b5bbb3
13138a575c
14a99599d
157101013
hex4cc49f7

80497143 has 6 divisors (see below), whose sum is σ = 116273664. Its totient is φ = 53664756.

The previous prime is 80497121. The next prime is 80497187. The reversal of 80497143 is 34179408.

It is a happy number.

It is not a de Polignac number, because 80497143 - 29 = 80496631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80497098 and 80497107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80497103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4472055 + ... + 4472072.

It is an arithmetic number, because the mean of its divisors is an integer number (19378944).

Almost surely, 280497143 is an apocalyptic number.

80497143 is a deficient number, since it is larger than the sum of its proper divisors (35776521).

80497143 is a wasteful number, since it uses less digits than its factorization.

80497143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8944133 (or 8944130 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 80497143 is about 8972.0200066652. The cubic root of 80497143 is about 431.7776472762. Note that the first 3 decimals are identical.

The spelling of 80497143 in words is "eighty million, four hundred ninety-seven thousand, one hundred forty-three".

Divisors: 1 3 9 8944127 26832381 80497143