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13830719 = 71975817
BaseRepresentation
bin110100110000…
…101000111111
3222000200011212
4310300220333
512020040334
61212235035
7225362540
oct64605077
928020155
1013830719
117897251
12476ba7b
132b33376
141ba04c7
151332ece
hexd30a3f

13830719 has 4 divisors (see below), whose sum is σ = 15806544. Its totient is φ = 11854896.

The previous prime is 13830703. The next prime is 13830757. The reversal of 13830719 is 91703831.

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 13830719 - 24 = 13830703 is a prime.

It is a super-2 number, since 2×138307192 = 382577576113922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13830769) 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 3 ways as a sum of consecutive naturals, for example, 987902 + ... + 987915.

It is an arithmetic number, because the mean of its divisors is an integer number (3951636).

Almost surely, 213830719 is an apocalyptic number.

13830719 is a deficient number, since it is larger than the sum of its proper divisors (1975825).

13830719 is an equidigital number, since it uses as much as digits as its factorization.

13830719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1975824.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 13830719 is about 3718.9674642298. The cubic root of 13830719 is about 240.0388768040.

The spelling of 13830719 in words is "thirteen million, eight hundred thirty thousand, seven hundred nineteen".

Divisors: 1 7 1975817 13830719