Search a number
-
+
8138017 = 12136709
BaseRepresentation
bin11111000010110100100001
3120022110021001
4133002310201
54040404032
6450232001
7126112666
oct37026441
916273231
108138017
114659238
122885601
1318bc1c4
14111ba6d
15aab3e7
hex7c2d21

8138017 has 4 divisors (see below), whose sum is σ = 8145940. Its totient is φ = 8130096.

The previous prime is 8137999. The next prime is 8138063. The reversal of 8138017 is 7108318.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2421136 + 5716881 = 1556^2 + 2391^2 .

It is a cyclic number.

It is not a de Polignac number, because 8138017 - 27 = 8137889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8138717) 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 3 ways as a sum of consecutive naturals, for example, 2142 + ... + 4567.

It is an arithmetic number, because the mean of its divisors is an integer number (2036485).

Almost surely, 28138017 is an apocalyptic number.

It is an amenable number.

8138017 is a deficient number, since it is larger than the sum of its proper divisors (7923).

8138017 is a wasteful number, since it uses less digits than its factorization.

8138017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7922.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 8138017 is about 2852.7209817997. The cubic root of 8138017 is about 201.1435902106.

The spelling of 8138017 in words is "eight million, one hundred thirty-eight thousand, seventeen".

Divisors: 1 1213 6709 8138017