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208713005 = 5192196979
BaseRepresentation
bin11000111000010…
…11010100101101
3112112201201102022
430130023110231
5411412304010
632413235525
75113013504
oct1434132455
9475651368
10208713005
11a78a4196
1259a92ba5
1334318127
141da0d83b
15134cad55
hexc70b52d

208713005 has 8 divisors (see below), whose sum is σ = 263637600. Its totient is φ = 158182416.

The previous prime is 208712981. The next prime is 208713053. The reversal of 208713005 is 500317802.

208713005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 208713005 - 26 = 208712941 is a prime.

It is a super-2 number, since 2×2087130052 = 87122236912260050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1098395 + ... + 1098584.

It is an arithmetic number, because the mean of its divisors is an integer number (32954700).

Almost surely, 2208713005 is an apocalyptic number.

It is an amenable number.

208713005 is a deficient number, since it is larger than the sum of its proper divisors (54924595).

208713005 is a wasteful number, since it uses less digits than its factorization.

208713005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197003.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 208713005 is about 14446.9029553050. The cubic root of 208713005 is about 593.1754526346.

The spelling of 208713005 in words is "two hundred eight million, seven hundred thirteen thousand, five".

Divisors: 1 5 19 95 2196979 10984895 41742601 208713005