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13825689 = 37363131
BaseRepresentation
bin110100101111…
…011010011001
3222000102021120
4310233122121
512014410224
61212155453
7225342063
oct64573231
928012246
1013825689
117893499
124768b89
132b30ca7
141b9c733
151331779
hexd2f699

13825689 has 8 divisors (see below), whose sum is σ = 18687072. Its totient is φ = 9090720.

The previous prime is 13825687. The next prime is 13825697. The reversal of 13825689 is 98652831.

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

It is not a de Polignac number, because 13825689 - 21 = 13825687 is a prime.

It is a super-2 number, since 2×138256892 = 382299352649442, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13825689.

It is not an unprimeable number, because it can be changed into a prime (13825681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31347 + ... + 31784.

It is an arithmetic number, because the mean of its divisors is an integer number (2335884).

Almost surely, 213825689 is an apocalyptic number.

It is an amenable number.

13825689 is a deficient number, since it is larger than the sum of its proper divisors (4861383).

13825689 is an equidigital number, since it uses as much as digits as its factorization.

13825689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63207.

The product of its digits is 103680, while the sum is 42.

The square root of 13825689 is about 3718.2911397576. The cubic root of 13825689 is about 240.0097739075.

The spelling of 13825689 in words is "thirteen million, eight hundred twenty-five thousand, six hundred eighty-nine".

Divisors: 1 3 73 219 63131 189393 4608563 13825689