Search a number
-
+
68133829 = 19109167197
BaseRepresentation
bin1000000111110…
…10001111000101
311202012120001011
410003322033011
5114420240304
610432202221
71455061621
oct403721705
9152176034
1068133829
1135506a55
121a999371
131116729a
149098181
155eacc04
hex40fa3c5

68133829 has 16 divisors (see below), whose sum is σ = 73180800. Its totient is φ = 63249984.

The previous prime is 68133827. The next prime is 68133869. The reversal of 68133829 is 92833186.

68133829 = 4472 + 4482 + ... + 6642.

It is a cyclic number.

It is not a de Polignac number, because 68133829 - 21 = 68133827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68133791 and 68133800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68133827) 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 15 ways as a sum of consecutive naturals, for example, 345759 + ... + 345955.

It is an arithmetic number, because the mean of its divisors is an integer number (4573800).

Almost surely, 268133829 is an apocalyptic number.

It is an amenable number.

68133829 is a deficient number, since it is larger than the sum of its proper divisors (5046971).

68133829 is a wasteful number, since it uses less digits than its factorization.

68133829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492.

The product of its digits is 62208, while the sum is 40.

The square root of 68133829 is about 8254.3218376799. The cubic root of 68133829 is about 408.4331013009.

The spelling of 68133829 in words is "sixty-eight million, one hundred thirty-three thousand, eight hundred twenty-nine".

Divisors: 1 19 109 167 197 2071 3173 3743 18203 21473 32899 345857 407987 625081 3585991 68133829