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80941641 = 31117223647
BaseRepresentation
bin1001101001100…
…01001001001001
312122022021001120
410310301021021
5131210113031
612010505453
72001664314
oct464611111
9178267046
1080941641
1141764720
1223135289
13139ccb81
14aa6d97b
15718ca96
hex4d31249

80941641 has 32 divisors (see below), whose sum is σ = 125411328. Its totient is φ = 45891840.

The previous prime is 80941631. The next prime is 80941649. The reversal of 80941641 is 14614908.

It is not a de Polignac number, because 80941641 - 27 = 80941513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (80941649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124780 + ... + 125426.

It is an arithmetic number, because the mean of its divisors is an integer number (3919104).

Almost surely, 280941641 is an apocalyptic number.

It is an amenable number.

80941641 is a deficient number, since it is larger than the sum of its proper divisors (44469687).

80941641 is a wasteful number, since it uses less digits than its factorization.

80941641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 80941641 is about 8996.7572491426. The cubic root of 80941641 is about 432.5709347161.

The spelling of 80941641 in words is "eighty million, nine hundred forty-one thousand, six hundred forty-one".

Divisors: 1 3 11 17 33 51 187 223 561 647 669 1941 2453 3791 7117 7359 10999 11373 21351 32997 41701 120989 125103 144281 362967 432843 1587091 2452777 4761273 7358331 26980547 80941641