Search a number
-
+
67289105 = 5136715451
BaseRepresentation
bin1000000001011…
…00000000010001
311200121122022002
410000230000101
5114211222410
610402123345
71444643102
oct400540021
9150548262
1067289105
1134a8a334
121a650555
1310c2c950
148d183a9
155d927a5
hex402c011

67289105 has 16 divisors (see below), whose sum is σ = 88261824. Its totient is φ = 48945600.

The previous prime is 67289081. The next prime is 67289107. The reversal of 67289105 is 50198276.

It is not a de Polignac number, because 67289105 - 218 = 67026961 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (67289107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3371 + ... + 12080.

It is an arithmetic number, because the mean of its divisors is an integer number (5516364).

Almost surely, 267289105 is an apocalyptic number.

67289105 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

67289105 is a deficient number, since it is larger than the sum of its proper divisors (20972719).

67289105 is a wasteful number, since it uses less digits than its factorization.

67289105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15536.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 67289105 is about 8202.9936608533. The cubic root of 67289105 is about 406.7381578006.

The spelling of 67289105 in words is "sixty-seven million, two hundred eighty-nine thousand, one hundred five".

Divisors: 1 5 13 65 67 335 871 4355 15451 77255 200863 1004315 1035217 5176085 13457821 67289105