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30202013 = 172377243
BaseRepresentation
bin111001100110…
…1100010011101
32002211102101002
41303031202131
530212431023
62555200045
7514466342
oct163154235
962742332
1030202013
1116059246
12a146025
136345c1a
1440227c9
1529b8b28
hex1ccd89d

30202013 has 8 divisors (see below), whose sum is σ = 33369408. Its totient is φ = 27189184.

The previous prime is 30202009. The next prime is 30202019. The reversal of 30202013 is 31020203.

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 30202013 - 22 = 30202009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30201985 and 30202003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30202019) 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, 38231 + ... + 39012.

It is an arithmetic number, because the mean of its divisors is an integer number (4171176).

Almost surely, 230202013 is an apocalyptic number.

It is an amenable number.

30202013 is a deficient number, since it is larger than the sum of its proper divisors (3167395).

30202013 is a wasteful number, since it uses less digits than its factorization.

30202013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77283.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 30202013 is about 5495.6358139891. The cubic root of 30202013 is about 311.4191369020.

Adding to 30202013 its reverse (31020203), we get a palindrome (61222216).

The spelling of 30202013 in words is "thirty million, two hundred two thousand, thirteen".

Divisors: 1 17 23 391 77243 1313131 1776589 30202013