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13189130 = 251318913
BaseRepresentation
bin110010010100…
…000000001010
3220211002002022
4302110000022
511334023010
61150404442
7220051163
oct62240012
926732068
1013189130
117499209
124500722
13296a326
141a7476a
151257d55
hexc9400a

13189130 has 8 divisors (see below), whose sum is σ = 23740452. Its totient is φ = 5275648.

The previous prime is 13189091. The next prime is 13189133. The reversal of 13189130 is 3198131.

It can be written as a sum of positive squares in 2 ways, for example, as 13126129 + 63001 = 3623^2 + 251^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 13189130.

It is not an unprimeable number, because it can be changed into a prime (13189133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 659447 + ... + 659466.

Almost surely, 213189130 is an apocalyptic number.

13189130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13189130 is a deficient number, since it is larger than the sum of its proper divisors (10551322).

13189130 is a wasteful number, since it uses less digits than its factorization.

13189130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318920.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 13189130 is about 3631.6841823044. The cubic root of 13189130 is about 236.2682600221.

Subtracting from 13189130 its reverse (3198131), we obtain a palindrome (9990999).

The spelling of 13189130 in words is "thirteen million, one hundred eighty-nine thousand, one hundred thirty".

Divisors: 1 2 5 10 1318913 2637826 6594565 13189130