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26530829 = 1317120049
BaseRepresentation
bin110010100110…
…1010000001101
31211220220110022
41211031100031
523242441304
62344351525
7441336233
oct145152015
954826408
1026530829
1113a81006
128a755a5
13565bc20
143748953
1524e0ebe
hex194d40d

26530829 has 8 divisors (see below), whose sum is σ = 30252600. Its totient is φ = 23049216.

The previous prime is 26530817. The next prime is 26530831. The reversal of 26530829 is 92803562.

It can be written as a sum of positive squares in 4 ways, for example, as 9597604 + 16933225 = 3098^2 + 4115^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 26530829 - 28 = 26530573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26530849) 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 7 ways as a sum of consecutive naturals, for example, 59804 + ... + 60245.

It is an arithmetic number, because the mean of its divisors is an integer number (3781575).

Almost surely, 226530829 is an apocalyptic number.

It is an amenable number.

26530829 is a deficient number, since it is larger than the sum of its proper divisors (3721771).

26530829 is a wasteful number, since it uses less digits than its factorization.

26530829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120079.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 26530829 is about 5150.8085773012. The cubic root of 26530829 is about 298.2521663304.

The spelling of 26530829 in words is "twenty-six million, five hundred thirty thousand, eight hundred twenty-nine".

Divisors: 1 13 17 221 120049 1560637 2040833 26530829