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80321841 = 332974883
BaseRepresentation
bin1001100100110…
…01110100110001
312121010202212000
410302121310301
5131030244331
611545324213
71663503315
oct462316461
9177122760
1080321841
1141380a96
1222a96669
1313843a22
14a94bb45
1570b90e6
hex4c99d31

80321841 has 8 divisors (see below), whose sum is σ = 118995360. Its totient is φ = 53547876.

The previous prime is 80321831. The next prime is 80321861. The reversal of 80321841 is 14812308.

It is not a de Polignac number, because 80321841 - 218 = 80059697 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2974883 = 80321841 / (8 + 0 + 3 + 2 + 1 + 8 + 4 + 1).

It is not an unprimeable number, because it can be changed into a prime (80321831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1487415 + ... + 1487468.

It is an arithmetic number, because the mean of its divisors is an integer number (14874420).

Almost surely, 280321841 is an apocalyptic number.

It is an amenable number.

80321841 is a deficient number, since it is larger than the sum of its proper divisors (38673519).

80321841 is a wasteful number, since it uses less digits than its factorization.

80321841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2974892 (or 2974886 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 80321841 is about 8962.2453101887. The cubic root of 80321841 is about 431.4639860522.

The spelling of 80321841 in words is "eighty million, three hundred twenty-one thousand, eight hundred forty-one".

Divisors: 1 3 9 27 2974883 8924649 26773947 80321841