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80827641 = 3283108203
BaseRepresentation
bin1001101000101…
…01010011111001
312122002110200100
410310111103321
5131142441031
612004230013
72001011046
oct464252371
9178073610
1080827641
1141697004
122309b309
131399000b
14aa401cd
157168de6
hex4d154f9

80827641 has 12 divisors (see below), whose sum is σ = 118158768. Its totient is φ = 53235384.

The previous prime is 80827627. The next prime is 80827667. The reversal of 80827641 is 14672808.

80827641 is a `hidden beast` number, since 8 + 0 + 8 + 2 + 7 + 641 = 666.

It is not a de Polignac number, because 80827641 - 25 = 80827609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80827596 and 80827605.

It is not an unprimeable number, because it can be changed into a prime (80827601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53355 + ... + 54848.

It is an arithmetic number, because the mean of its divisors is an integer number (9846564).

Almost surely, 280827641 is an apocalyptic number.

It is an amenable number.

80827641 is a deficient number, since it is larger than the sum of its proper divisors (37331127).

80827641 is a wasteful number, since it uses less digits than its factorization.

80827641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108292 (or 108289 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 80827641 is about 8990.4194006731. The cubic root of 80827641 is about 432.3677584717.

The spelling of 80827641 in words is "eighty million, eight hundred twenty-seven thousand, six hundred forty-one".

Divisors: 1 3 9 83 249 747 108203 324609 973827 8980849 26942547 80827641