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13030845 = 353753443
BaseRepresentation
bin110001101101…
…010110111101
3220112000221220
4301231112331
511313441340
61143143553
7215521542
oct61552675
926460856
1013030845
1173a02a3
124444bb9
132913279
141a32bc9
151225ed0
hexc6d5bd

13030845 has 32 divisors (see below), whose sum is σ = 21866112. Its totient is φ = 6619392.

The previous prime is 13030793. The next prime is 13030877. The reversal of 13030845 is 54803031.

It is not a de Polignac number, because 13030845 - 211 = 13028797 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29194 + ... + 29636.

It is an arithmetic number, because the mean of its divisors is an integer number (683316).

Almost surely, 213030845 is an apocalyptic number.

13030845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13030845 is a deficient number, since it is larger than the sum of its proper divisors (8835267).

13030845 is a wasteful number, since it uses less digits than its factorization.

13030845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 13030845 is about 3609.8261731003. The cubic root of 13030845 is about 235.3192883428.

Adding to 13030845 its reverse (54803031), we get a palindrome (67833876).

The spelling of 13030845 in words is "thirteen million, thirty thousand, eight hundred forty-five".

Divisors: 1 3 5 15 37 53 111 159 185 265 443 555 795 1329 1961 2215 5883 6645 9805 16391 23479 29415 49173 70437 81955 117395 245865 352185 868723 2606169 4343615 13030845