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270643420 = 22513532171
BaseRepresentation
bin10000001000011…
…011000011011100
3200212021002222101
4100020123003130
51023241042140
642504454444
76464300605
oct2010330334
9625232871
10270643420
11129853453
127677a424
13440bc948
1427d30dac
1518b6099a
hex1021b0dc

270643420 has 12 divisors (see below), whose sum is σ = 568351224. Its totient is φ = 108257360.

The previous prime is 270643411. The next prime is 270643427. The reversal of 270643420 is 24346072.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (270643427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6766066 + ... + 6766105.

It is an arithmetic number, because the mean of its divisors is an integer number (47362602).

Almost surely, 2270643420 is an apocalyptic number.

270643420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

270643420 is an abundant number, since it is smaller than the sum of its proper divisors (297707804).

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

270643420 is a wasteful number, since it uses less digits than its factorization.

270643420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13532180 (or 13532178 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 270643420 is about 16451.2437219804. The cubic root of 270643420 is about 646.8434094898.

Adding to 270643420 its reverse (24346072), we get a palindrome (294989492).

The spelling of 270643420 in words is "two hundred seventy million, six hundred forty-three thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 13532171 27064342 54128684 67660855 135321710 270643420