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15130769 = 70921341
BaseRepresentation
bin111001101110…
…000010010001
31001110201111212
4321232002101
512333141034
61300145505
7242416013
oct71560221
931421455
1015130769
1185a4a75
125098295
13319a024
14201c1b3
1514dd2ce
hexe6e091

15130769 has 4 divisors (see below), whose sum is σ = 15152820. Its totient is φ = 15108720.

The previous prime is 15130751. The next prime is 15130771. The reversal of 15130769 is 96703151.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9840769 + 5290000 = 3137^2 + 2300^2 .

It is a cyclic number.

It is not a de Polignac number, because 15130769 - 28 = 15130513 is a prime.

It is a super-2 number, since 2×151307692 = 457880341062722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15130729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9962 + ... + 11379.

It is an arithmetic number, because the mean of its divisors is an integer number (3788205).

Almost surely, 215130769 is an apocalyptic number.

It is an amenable number.

15130769 is a deficient number, since it is larger than the sum of its proper divisors (22051).

15130769 is an equidigital number, since it uses as much as digits as its factorization.

15130769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22050.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 15130769 is about 3889.8289165463. The cubic root of 15130769 is about 247.3358105662.

The spelling of 15130769 in words is "fifteen million, one hundred thirty thousand, seven hundred sixty-nine".

Divisors: 1 709 21341 15130769