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9104081 = 71300583
BaseRepresentation
bin100010101110…
…101011010001
3122010112110012
4202232223101
54312312311
6523044305
7140245340
oct42565321
918115405
109104081
115159038
123070695
131b69b3c
1412cdb57
15bec78b
hex8aead1

9104081 has 4 divisors (see below), whose sum is σ = 10404672. Its totient is φ = 7803492.

The previous prime is 9104063. The next prime is 9104087. The reversal of 9104081 is 1804019.

9104081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1804019 = 7257717.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-9104081 is a prime.

It is a super-2 number, since 2×91040812 = 165768581709122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9104087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 650285 + ... + 650298.

It is an arithmetic number, because the mean of its divisors is an integer number (2601168).

Almost surely, 29104081 is an apocalyptic number.

It is an amenable number.

9104081 is a deficient number, since it is larger than the sum of its proper divisors (1300591).

9104081 is a wasteful number, since it uses less digits than its factorization.

9104081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300590.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 9104081 is about 3017.2969691431. The cubic root of 9104081 is about 208.8071525297.

The spelling of 9104081 in words is "nine million, one hundred four thousand, eighty-one".

Divisors: 1 7 1300583 9104081