Search a number
-
+
13025406 = 2323372551
BaseRepresentation
bin110001101100…
…000001111110
3220111202111110
4301230001332
511313303111
61143102450
7215466642
oct61540176
926452443
1013025406
1173971a9
124441a26
132910954
141a30c22
1512245a6
hexc6c07e

13025406 has 32 divisors (see below), whose sum is σ = 27929088. Its totient is φ = 4039200.

The previous prime is 13025401. The next prime is 13025407. The reversal of 13025406 is 60452031.

It is a happy number.

13025406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×130254062 = 339322402929672, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13025401) 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, 3831 + ... + 6381.

It is an arithmetic number, because the mean of its divisors is an integer number (872784).

Almost surely, 213025406 is an apocalyptic number.

13025406 is an abundant number, since it is smaller than the sum of its proper divisors (14903682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13025406 is a wasteful number, since it uses less digits than its factorization.

13025406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2616.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 13025406 is about 3609.0727340967. The cubic root of 13025406 is about 235.2865434792.

Adding to 13025406 its reverse (60452031), we get a palindrome (73477437).

It can be divided in two parts, 13025 and 406, that added together give a palindrome (13431).

The spelling of 13025406 in words is "thirteen million, twenty-five thousand, four hundred six".

Divisors: 1 2 3 6 23 37 46 69 74 111 138 222 851 1702 2551 2553 5102 5106 7653 15306 58673 94387 117346 176019 188774 283161 352038 566322 2170901 4341802 6512703 13025406