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768213 = 32175021
BaseRepresentation
bin10111011100011010101
31110000210100
42323203111
5144040323
624244313
76346455
oct2734325
91400710
10768213
11485196
12310699
1320b884
1415dd65
15102943
hexbb8d5

768213 has 12 divisors (see below), whose sum is σ = 1175148. Its totient is φ = 481920.

The previous prime is 768203. The next prime is 768221. The reversal of 768213 is 312867.

It can be written as a sum of positive squares in 2 ways, for example, as 651249 + 116964 = 807^2 + 342^2 .

It is not a de Polignac number, because 768213 - 24 = 768197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (768203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2358 + ... + 2663.

It is an arithmetic number, because the mean of its divisors is an integer number (97929).

2768213 is an apocalyptic number.

It is an amenable number.

768213 is a deficient number, since it is larger than the sum of its proper divisors (406935).

768213 is a wasteful number, since it uses less digits than its factorization.

768213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5044 (or 5041 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 768213 is about 876.4776095258. The cubic root of 768213 is about 91.5856047375.

The spelling of 768213 in words is "seven hundred sixty-eight thousand, two hundred thirteen".

Divisors: 1 3 9 17 51 153 5021 15063 45189 85357 256071 768213