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13408829 = 78921523
BaseRepresentation
bin110011001001…
…101000111101
3221020020110022
4303021220331
511413040304
61155221525
7221654540
oct63115075
927206408
1013408829
117629285
1245a78a5
132a16325
141ad0857
15129cebe
hexcc9a3d

13408829 has 8 divisors (see below), whose sum is σ = 15497280. Its totient is φ = 11363616.

The previous prime is 13408799. The next prime is 13408831. The reversal of 13408829 is 92880431.

It is a happy number.

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 13408829 - 212 = 13404733 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 (13408229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10139 + ... + 11384.

It is an arithmetic number, because the mean of its divisors is an integer number (1937160).

Almost surely, 213408829 is an apocalyptic number.

It is an amenable number.

13408829 is a deficient number, since it is larger than the sum of its proper divisors (2088451).

13408829 is an equidigital number, since it uses as much as digits as its factorization.

13408829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21619.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 13408829 is about 3661.8067944664. The cubic root of 13408829 is about 237.5729282964.

The spelling of 13408829 in words is "thirteen million, four hundred eight thousand, eight hundred twenty-nine".

Divisors: 1 7 89 623 21523 150661 1915547 13408829