Cookie Consent by FreePrivacyPolicy.com
Search a number
-
+
13120033 = 16380491
BaseRepresentation
bin110010000011…
…001000100001
3220200120022011
4302003020201
511324320113
61145112521
7216342553
oct62031041
926616264
1013120033
117451303
124488741
132944a44
141a574d3
15124263d
hexc83221

13120033 has 4 divisors (see below), whose sum is σ = 13200688. Its totient is φ = 13039380.

The previous prime is 13119983. The next prime is 13120057. The reversal of 13120033 is 33002131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33002131 = 47702173.

It is a cyclic number.

It is not a de Polignac number, because 13120033 - 29 = 13119521 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 13119995 and 13120022.

It is not an unprimeable number, because it can be changed into a prime (13121033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40083 + ... + 40408.

It is an arithmetic number, because the mean of its divisors is an integer number (3300172).

Almost surely, 213120033 is an apocalyptic number.

It is an amenable number.

13120033 is a deficient number, since it is larger than the sum of its proper divisors (80655).

13120033 is an equidigital number, since it uses as much as digits as its factorization.

13120033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80654.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 13120033 is about 3622.1586105526. The cubic root of 13120033 is about 235.8549393427.

Adding to 13120033 its reverse (33002131), we get a palindrome (46122164).

It can be divided in two parts, 131 and 20033, that added together give a square (20164 = 1422).

The spelling of 13120033 in words is "thirteen million, one hundred twenty thousand, thirty-three".

Divisors: 1 163 80491 13120033