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13715913 = 34571971
BaseRepresentation
bin110100010100…
…100111001001
3221210211200210
4310110213021
512002402123
61205551333
7224404041
oct64244711
927724623
1013715913
117818a72
124715549
132ac3033
141b70721
15130de93
hexd149c9

13715913 has 4 divisors (see below), whose sum is σ = 18287888. Its totient is φ = 9143940.

The previous prime is 13715909. The next prime is 13715917. The reversal of 13715913 is 31951731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (13715909) and next prime (13715917).

It is not a de Polignac number, because 13715913 - 22 = 13715909 is a prime.

It is the 3704-th Hogben number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13715917) by changing a digit.

It is a nontrivial repunit in base 3703.

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 3 ways as a sum of consecutive naturals, for example, 2285983 + ... + 2285988.

It is an arithmetic number, because the mean of its divisors is an integer number (4571972).

Almost surely, 213715913 is an apocalyptic number.

It is an amenable number.

13715913 is a deficient number, since it is larger than the sum of its proper divisors (4571975).

13715913 is an equidigital number, since it uses as much as digits as its factorization.

13715913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4571974.

The product of its digits is 2835, while the sum is 30.

The square root of 13715913 is about 3703.5001012556. The cubic root of 13715913 is about 239.3728591818.

The spelling of 13715913 in words is "thirteen million, seven hundred fifteen thousand, nine hundred thirteen".

Divisors: 1 3 4571971 13715913