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188008213 = 719727299
BaseRepresentation
bin10110011010011…
…00011100010101
3111002202210210011
423031030130111
5341112230323
630353400221
74442020621
oct1315143425
9432683704
10188008213
1197142398
1252b69071
132cc48c83
141ad80181
151178b20d
hexb34c715

188008213 has 8 divisors (see below), whose sum is σ = 192628800. Its totient is φ = 183442560.

The previous prime is 188008201. The next prime is 188008217. The reversal of 188008213 is 312800881.

188008213 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 188008213 - 25 = 188008181 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 (188008217) 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, 6763 + ... + 20536.

It is an arithmetic number, because the mean of its divisors is an integer number (24078600).

Almost surely, 2188008213 is an apocalyptic number.

It is an amenable number.

188008213 is a deficient number, since it is larger than the sum of its proper divisors (4620587).

188008213 is an equidigital number, since it uses as much as digits as its factorization.

188008213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27467.

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 188008213 is about 13711.6086948250. The cubic root of 188008213 is about 572.8737735757.

The spelling of 188008213 in words is "one hundred eighty-eight million, eight thousand, two hundred thirteen".

Divisors: 1 71 97 6887 27299 1938229 2648003 188008213