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80344217 = 198095227
BaseRepresentation
bin1001100100111…
…11010010011001
312121011220112202
410302133102121
5131032003332
611550015545
71663625462
oct462372231
9177156482
1080344217
1141396888
1222aa75b5
1313850c75
14a955d69
1570c0a62
hex4c9f499

80344217 has 8 divisors (see below), whose sum is σ = 84693600. Its totient is φ = 76006944.

The previous prime is 80344211. The next prime is 80344241. The reversal of 80344217 is 71244308.

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 80344217 - 218 = 80082073 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80344217.

It is not an unprimeable number, because it can be changed into a prime (80344211) 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, 12758 + ... + 17984.

It is an arithmetic number, because the mean of its divisors is an integer number (10586700).

Almost surely, 280344217 is an apocalyptic number.

It is an amenable number.

80344217 is a deficient number, since it is larger than the sum of its proper divisors (4349383).

80344217 is a wasteful number, since it uses less digits than its factorization.

80344217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6055.

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

The square root of 80344217 is about 8963.4935711474. The cubic root of 80344217 is about 431.5040479733.

Subtracting from 80344217 its reverse (71244308), we obtain a palindrome (9099909).

The spelling of 80344217 in words is "eighty million, three hundred forty-four thousand, two hundred seventeen".

Divisors: 1 19 809 5227 15371 99313 4228643 80344217