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8260081 = 82110061
BaseRepresentation
bin11111100000100111110001
3120112122200221
4133200213301
54103310311
6453013041
7130131604
oct37404761
916478627
108260081
114731a15
122924181
13193292b
14115033b
15ad2671
hex7e09f1

8260081 has 4 divisors (see below), whose sum is σ = 8270964. Its totient is φ = 8249200.

The previous prime is 8260073. The next prime is 8260097. The reversal of 8260081 is 1800628.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3459600 + 4800481 = 1860^2 + 2191^2 .

It is a cyclic number.

It is not a de Polignac number, because 8260081 - 23 = 8260073 is a prime.

It is a super-2 number, since 2×82600812 = 136457876253122, which contains 22 as substring.

It is a pancake number, because a pancake can be divided into 8260081 parts by 4064 straight cuts.

It is a Duffinian number.

8260081 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8260051) 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 3 ways as a sum of consecutive naturals, for example, 4210 + ... + 5851.

It is an arithmetic number, because the mean of its divisors is an integer number (2067741).

Almost surely, 28260081 is an apocalyptic number.

It is an amenable number.

8260081 is a deficient number, since it is larger than the sum of its proper divisors (10883).

8260081 is a wasteful number, since it uses less digits than its factorization.

8260081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10882.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 8260081 is about 2874.0356643577. The cubic root of 8260081 is about 202.1442700373.

The spelling of 8260081 in words is "eight million, two hundred sixty thousand, eighty-one".

Divisors: 1 821 10061 8260081