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80892841 = 3731597
BaseRepresentation
bin1001101001001…
…01001110101001
312122012210010011
410310211032221
5131202032331
612005451521
72001402121
oct464451651
9178183104
1080892841
1141730a97
1223110ba1
13139b38b3
14aa59c81
15717d3b1
hex4d253a9

80892841 has 8 divisors (see below), whose sum is σ = 83191880. Its totient is φ = 78657264.

The previous prime is 80892827. The next prime is 80892853. The reversal of 80892841 is 14829808.

It can be written as a sum of positive squares in 4 ways, for example, as 20115225 + 60777616 = 4485^2 + 7796^2 .

It is not a de Polignac number, because 80892841 - 225 = 47338409 is a prime.

It is a pancake number, because a pancake can be divided into 80892841 parts by 12719 straight cuts.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80892794 and 80892803.

It is not an unprimeable number, because it can be changed into a prime (80892811) 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, 49855 + ... + 51451.

It is an arithmetic number, because the mean of its divisors is an integer number (10398985).

Almost surely, 280892841 is an apocalyptic number.

It is an amenable number.

80892841 is a deficient number, since it is larger than the sum of its proper divisors (2299039).

80892841 is an frugal number, since it uses more digits than its factorization.

80892841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1708 (or 1634 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 40.

The square root of 80892841 is about 8994.0447519456. The cubic root of 80892841 is about 432.4839843936.

The spelling of 80892841 in words is "eighty million, eight hundred ninety-two thousand, eight hundred forty-one".

Divisors: 1 37 1369 1597 50653 59089 2186293 80892841