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80443271 = 4116312037
BaseRepresentation
bin1001100101101…
…11011110000111
312121100221102102
410302313132013
5131043141041
611552102315
71664520326
oct462673607
9177327372
1080443271
1141454247
1222b3499b
131388708c
14a9800bd
1570e009b
hex4cb7787

80443271 has 8 divisors (see below), whose sum is σ = 82917744. Its totient is φ = 77993280.

The previous prime is 80443247. The next prime is 80443327. The reversal of 80443271 is 17234408.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80443271 - 214 = 80426887 is a prime.

It is a super-2 number, since 2×804432712 = 12942239698358882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80643271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 665 + ... + 12701.

It is an arithmetic number, because the mean of its divisors is an integer number (10364718).

Almost surely, 280443271 is an apocalyptic number.

80443271 is a deficient number, since it is larger than the sum of its proper divisors (2474473).

80443271 is a wasteful number, since it uses less digits than its factorization.

80443271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12241.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 80443271 is about 8969.0172817316. The cubic root of 80443271 is about 431.6813046587.

Adding to 80443271 its reverse (17234408), we get a palindrome (97677679).

The spelling of 80443271 in words is "eighty million, four hundred forty-three thousand, two hundred seventy-one".

Divisors: 1 41 163 6683 12037 493517 1962031 80443271