Search a number
-
+
69108293 = 59219853
BaseRepresentation
bin1000001111010…
…00001001000101
311211001001202102
410013220021011
5120142431133
610505121445
71466260622
oct407501105
9154031672
1069108293
11360120a1
121b189285
13114189a7
14926d349
1561017e8
hex41e8245

69108293 has 6 divisors (see below), whose sum is σ = 70303014. Its totient is φ = 67933544.

The previous prime is 69108287. The next prime is 69108311. The reversal of 69108293 is 39280196.

It can be written as a sum of positive squares in only one way, i.e., 48469444 + 20638849 = 6962^2 + 4543^2 .

It is not a de Polignac number, because 69108293 - 26 = 69108229 is a prime.

It is a super-2 number, since 2×691082932 = 9551912322747698, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69108203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6446 + ... + 13407.

It is an arithmetic number, because the mean of its divisors is an integer number (11717169).

Almost surely, 269108293 is an apocalyptic number.

It is an amenable number.

69108293 is a deficient number, since it is larger than the sum of its proper divisors (1194721).

69108293 is an equidigital number, since it uses as much as digits as its factorization.

69108293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19971 (or 19912 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 69108293 is about 8313.1397798906. The cubic root of 69108293 is about 410.3710561159.

The spelling of 69108293 in words is "sixty-nine million, one hundred eight thousand, two hundred ninety-three".

Divisors: 1 59 3481 19853 1171327 69108293