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8243208 = 233412721
BaseRepresentation
bin11111011100100000001000
3120111210120000
4133130200020
54102240313
6452403000
7130031451
oct37344010
916453500
108243208
114720276
122916460
13192804c
141148128
15acc673
hex7dc808

8243208 has 40 divisors (see below), whose sum is σ = 23090430. Its totient is φ = 2747520.

The previous prime is 8243203. The next prime is 8243219. The reversal of 8243208 is 8023428.

8243208 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 5560164 + 2683044 = 2358^2 + 1638^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8243201) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5713 + ... + 7008.

Almost surely, 28243208 is an apocalyptic number.

It is an amenable number.

8243208 is an abundant number, since it is smaller than the sum of its proper divisors (14847222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8243208 is a wasteful number, since it uses less digits than its factorization.

8243208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12739 (or 12726 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 8243208 is about 2871.0987443834. The cubic root of 8243208 is about 202.0065350956.

The spelling of 8243208 in words is "eight million, two hundred forty-three thousand, two hundred eight".

Divisors: 1 2 3 4 6 8 9 12 18 24 27 36 54 72 81 108 162 216 324 648 12721 25442 38163 50884 76326 101768 114489 152652 228978 305304 343467 457956 686934 915912 1030401 1373868 2060802 2747736 4121604 8243208