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13813033 = 131318111
BaseRepresentation
bin110100101100…
…010100101001
3221222202220211
4310230110221
512014004113
61212021121
7225260143
oct64542451
927882824
1013813033
117884a33
1247617a1
132b282c0
141b97c93
15132cb3d
hexd2c529

13813033 has 8 divisors (see below), whose sum is σ = 14990976. Its totient is φ = 12651600.

The previous prime is 13813013. The next prime is 13813039. The reversal of 13813033 is 33031831.

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

It is not a de Polignac number, because 13813033 - 29 = 13812521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13812995 and 13813013.

It is not an unprimeable number, because it can be changed into a prime (13813039) by changing a digit.

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, 2353 + ... + 5758.

It is an arithmetic number, because the mean of its divisors is an integer number (1873872).

Almost surely, 213813033 is an apocalyptic number.

13813033 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13813033 is a deficient number, since it is larger than the sum of its proper divisors (1177943).

13813033 is a wasteful number, since it uses less digits than its factorization.

13813033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8255.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 13813033 is about 3716.5888930577. The cubic root of 13813033 is about 239.9365167741.

Adding to 13813033 its reverse (33031831), we get a palindrome (46844864).

The spelling of 13813033 in words is "thirteen million, eight hundred thirteen thousand, thirty-three".

Divisors: 1 13 131 1703 8111 105443 1062541 13813033