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809332013 = 7971191947
BaseRepresentation
bin110000001111010…
…110110100101101
32002101220022210202
4300033112310231
53124142111023
6212150443245
726025131360
oct6017266455
92071808722
10809332013
11385935136
121a7063525
13cb89c6a9
14796b80d7
154b0bc128
hex303d6d2d

809332013 has 8 divisors (see below), whose sum is σ = 934487232. Its totient is φ = 686560896.

The previous prime is 809332003. The next prime is 809332019. The reversal of 809332013 is 310233908.

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

It is not a de Polignac number, because 809332013 - 24 = 809331997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809332019) 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, 595295 + ... + 596652.

It is an arithmetic number, because the mean of its divisors is an integer number (116810904).

Almost surely, 2809332013 is an apocalyptic number.

It is an amenable number.

809332013 is a deficient number, since it is larger than the sum of its proper divisors (125155219).

809332013 is a wasteful number, since it uses less digits than its factorization.

809332013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192051.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 809332013 is about 28448.7611856826. The cubic root of 809332013 is about 931.9134355214.

The spelling of 809332013 in words is "eight hundred nine million, three hundred thirty-two thousand, thirteen".

Divisors: 1 7 97 679 1191947 8343629 115618859 809332013