Search a number
-
+
13030433 = 131002341
BaseRepresentation
bin110001101101…
…010000100001
3220112000101122
4301231100201
511313433213
61143142025
7215520413
oct61552041
926460348
1013030433
11739aa59
124444915
132913020
141a329b3
151225d08
hexc6d421

13030433 has 4 divisors (see below), whose sum is σ = 14032788. Its totient is φ = 12028080.

The previous prime is 13030403. The next prime is 13030453. The reversal of 13030433 is 33403031.

13030433 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33403031 = 34139787.

It can be written as a sum of positive squares in 2 ways, for example, as 2226064 + 10804369 = 1492^2 + 3287^2 .

It is a cyclic number.

It is not a de Polignac number, because 13030433 - 212 = 13026337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13030403) 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, 501158 + ... + 501183.

It is an arithmetic number, because the mean of its divisors is an integer number (3508197).

Almost surely, 213030433 is an apocalyptic number.

13030433 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13030433 is a deficient number, since it is larger than the sum of its proper divisors (1002355).

13030433 is a wasteful number, since it uses less digits than its factorization.

13030433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002354.

The product of its (nonzero) digits is 324, while the sum is 17.

The square root of 13030433 is about 3609.7691061895. The cubic root of 13030433 is about 235.3168082640.

Adding to 13030433 its reverse (33403031), we get a palindrome (46433464).

The spelling of 13030433 in words is "thirteen million, thirty thousand, four hundred thirty-three".

Divisors: 1 13 1002341 13030433