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80002143 = 32132392861
BaseRepresentation
bin1001100010010…
…11110001011111
312120112112022100
410301023301133
5130440032033
611534420143
71661002254
oct461136137
9176475270
1080002143
1141182881
1222961653
1313761360
14a8a742b
157054513
hex4c4bc5f

80002143 has 24 divisors (see below), whose sum is σ = 125012160. Its totient is φ = 49008960.

The previous prime is 80002033. The next prime is 80002147. The reversal of 80002143 is 34120008.

It is a happy number.

It is not a de Polignac number, because 80002143 - 29 = 80001631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80002147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26533 + ... + 29393.

It is an arithmetic number, because the mean of its divisors is an integer number (5208840).

Almost surely, 280002143 is an apocalyptic number.

80002143 is a deficient number, since it is larger than the sum of its proper divisors (45010017).

80002143 is a wasteful number, since it uses less digits than its factorization.

80002143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3119 (or 3116 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 80002143 is about 8944.3917065388. The cubic root of 80002143 is about 430.8907854333.

The spelling of 80002143 in words is "eighty million, two thousand, one hundred forty-three".

Divisors: 1 3 9 13 39 117 239 717 2151 2861 3107 8583 9321 25749 27963 37193 111579 334737 683779 2051337 6154011 8889127 26667381 80002143