Search a number
-
+
13138893 = 322715387
BaseRepresentation
bin110010000111…
…101111001101
3220201112011200
4302013233031
511330421033
61145340113
7216451545
oct62075715
926645150
1013138893
117464499
124497639
1329504c1
141a60325
151248013
hexc87bcd

13138893 has 12 divisors (see below), whose sum is σ = 19051968. Its totient is φ = 8725320.

The previous prime is 13138891. The next prime is 13138919. The reversal of 13138893 is 39883131.

13138893 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13138893 - 21 = 13138891 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13138891) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 255 + ... + 5132.

It is an arithmetic number, because the mean of its divisors is an integer number (1587664).

Almost surely, 213138893 is an apocalyptic number.

It is an amenable number.

13138893 is a deficient number, since it is larger than the sum of its proper divisors (5913075).

13138893 is a wasteful number, since it uses less digits than its factorization.

13138893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5664 (or 5661 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 13138893 is about 3624.7610955758. The cubic root of 13138893 is about 235.9678987746.

The spelling of 13138893 in words is "thirteen million, one hundred thirty-eight thousand, eight hundred ninety-three".

Divisors: 1 3 9 271 813 2439 5387 16161 48483 1459877 4379631 13138893