Search a number
-
+
67930105 = 583191857
BaseRepresentation
bin1000000110010…
…00011111111001
311201211012120211
410003020133321
5114342230410
610423551121
71453252645
oct403103771
9151735524
1067930105
1135387991
121a8bb4a1
13110c5639
149043c25
155e6c68a
hex40c87f9

67930105 has 16 divisors (see below), whose sum is σ = 83026944. Its totient is φ = 53345920.

The previous prime is 67930103. The next prime is 67930117. The reversal of 67930105 is 50103976.

It is not a de Polignac number, because 67930105 - 21 = 67930103 is a prime.

It is a super-2 number, since 2×679301052 = 9228998330622050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67930103) 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, 78837 + ... + 79693.

It is an arithmetic number, because the mean of its divisors is an integer number (5189184).

Almost surely, 267930105 is an apocalyptic number.

It is an amenable number.

67930105 is a deficient number, since it is larger than the sum of its proper divisors (15096839).

67930105 is a wasteful number, since it uses less digits than its factorization.

67930105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 67930105 is about 8241.9721547698. The cubic root of 67930105 is about 408.0256155422.

The spelling of 67930105 in words is "sixty-seven million, nine hundred thirty thousand, one hundred five".

Divisors: 1 5 83 191 415 857 955 4285 15853 71131 79265 163687 355655 818435 13586021 67930105