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13830379 = 34739857
BaseRepresentation
bin110100110000…
…100011101011
3222000122201021
4310300203223
512020033004
61212233311
7225361543
oct64604353
928018637
1013830379
117896a72
12476b837
132b33174
141ba0323
151332d54
hexd308eb

13830379 has 4 divisors (see below), whose sum is σ = 13870584. Its totient is φ = 13790176.

The previous prime is 13830353. The next prime is 13830389. The reversal of 13830379 is 97303831.

13830379 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 13830379 - 27 = 13830251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13830319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19582 + ... + 20275.

It is an arithmetic number, because the mean of its divisors is an integer number (3467646).

Almost surely, 213830379 is an apocalyptic number.

13830379 is a deficient number, since it is larger than the sum of its proper divisors (40205).

13830379 is an equidigital number, since it uses as much as digits as its factorization.

13830379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40204.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 13830379 is about 3718.9217523363. The cubic root of 13830379 is about 240.0369098326.

The spelling of 13830379 in words is "thirteen million, eight hundred thirty thousand, three hundred seventy-nine".

Divisors: 1 347 39857 13830379