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13830445 = 57138959
BaseRepresentation
bin110100110000…
…100100101101
3222000122210201
4310300210231
512020033240
61212233501
7225361666
oct64604455
928018721
1013830445
117897022
12476b891
132b331c5
141ba036d
151332d9a
hexd3092d

13830445 has 8 divisors (see below), whose sum is σ = 16830720. Its totient is φ = 10908240.

The previous prime is 13830437. The next prime is 13830457. The reversal of 13830445 is 54403831.

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

It is not a de Polignac number, because 13830445 - 23 = 13830437 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 19125 + ... + 19834.

It is an arithmetic number, because the mean of its divisors is an integer number (2103840).

Almost surely, 213830445 is an apocalyptic number.

It is an amenable number.

13830445 is a deficient number, since it is larger than the sum of its proper divisors (3000275).

13830445 is an equidigital number, since it uses as much as digits as its factorization.

13830445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39035.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 13830445 is about 3718.9306258655. The cubic root of 13830445 is about 240.0372916590.

The spelling of 13830445 in words is "thirteen million, eight hundred thirty thousand, four hundred forty-five".

Divisors: 1 5 71 355 38959 194795 2766089 13830445