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13047807 = 331307457
BaseRepresentation
bin110001110001…
…011111111111
3220112220020010
4301301133333
511320012212
61143354303
7215622153
oct61613777
926486203
1013047807
117402013
124452993
13291abc6
141a39063
15122b03c
hexc717ff

13047807 has 16 divisors (see below), whose sum is σ = 18056192. Its totient is φ = 8372160.

The previous prime is 13047787. The next prime is 13047809. The reversal of 13047807 is 70874031.

It is a happy number.

It is not a de Polignac number, because 13047807 - 211 = 13045759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13047809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28323 + ... + 28779.

It is an arithmetic number, because the mean of its divisors is an integer number (1128512).

Almost surely, 213047807 is an apocalyptic number.

13047807 is a deficient number, since it is larger than the sum of its proper divisors (5008385).

13047807 is a wasteful number, since it uses less digits than its factorization.

13047807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 13047807 is about 3612.1748296560. The cubic root of 13047807 is about 235.4213476014.

The spelling of 13047807 in words is "thirteen million, forty-seven thousand, eight hundred seven".

Divisors: 1 3 31 93 307 457 921 1371 9517 14167 28551 42501 140299 420897 4349269 13047807