Search a number
-
+
12065807 = 13928139
BaseRepresentation
bin101110000001…
…110000001111
3211201000011202
4232001300033
511042101212
61110340115
7204362165
oct56016017
924630152
1012065807
1168a1246
12405a63b
132665c40
141861235
1510d50c2
hexb81c0f

12065807 has 4 divisors (see below), whose sum is σ = 12993960. Its totient is φ = 11137656.

The previous prime is 12065791. The next prime is 12065857. The reversal of 12065807 is 70856021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70856021 = 83853687.

It is a cyclic number.

It is not a de Polignac number, because 12065807 - 24 = 12065791 is a prime.

It is a super-2 number, since 2×120658072 = 291167397122498, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12065807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12065857) 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, 464057 + ... + 464082.

It is an arithmetic number, because the mean of its divisors is an integer number (3248490).

Almost surely, 212065807 is an apocalyptic number.

12065807 is a deficient number, since it is larger than the sum of its proper divisors (928153).

12065807 is an equidigital number, since it uses as much as digits as its factorization.

12065807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928152.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 12065807 is about 3473.5870508741. The cubic root of 12065807 is about 229.3605869919.

The spelling of 12065807 in words is "twelve million, sixty-five thousand, eight hundred seven".

Divisors: 1 13 928139 12065807