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3200813 = 71123779
BaseRepresentation
bin1100001101011100101101
320000121200122
430031130231
51304411223
6152334325
736130550
oct14153455
96017618
103200813
111896900
1210a43a5
13880b95
145d4697
154335c8
hex30d72d

3200813 has 12 divisors (see below), whose sum is σ = 4021920. Its totient is φ = 2493480.

The previous prime is 3200807. The next prime is 3200837. The reversal of 3200813 is 3180023.

It is not a de Polignac number, because 3200813 - 28 = 3200557 is a prime.

3200813 is a modest number, since divided by 813 gives 32 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 3200791 and 3200800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3200213) 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, 1043 + ... + 2736.

It is an arithmetic number, because the mean of its divisors is an integer number (335160).

Almost surely, 23200813 is an apocalyptic number.

It is an amenable number.

3200813 is a deficient number, since it is larger than the sum of its proper divisors (821107).

3200813 is a wasteful number, since it uses less digits than its factorization.

3200813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3808 (or 3797 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 3200813 is about 1789.0816079766. The cubic root of 3200813 is about 147.3737385456.

Adding to 3200813 its reverse (3180023), we get a palindrome (6380836).

The spelling of 3200813 in words is "three million, two hundred thousand, eight hundred thirteen".

Divisors: 1 7 11 77 121 847 3779 26453 41569 290983 457259 3200813