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69306220 = 22529311827
BaseRepresentation
bin1000010000110…
…00011101101100
311211102010021001
410020120131230
5120220244340
610513250044
71501043644
oct410303554
9154363231
1069306220
1136137875
121b263924
1311487ac9
1492c1524
15614029a
hex421876c

69306220 has 24 divisors (see below), whose sum is σ = 146052144. Its totient is φ = 27625536.

The previous prime is 69306197. The next prime is 69306227. The reversal of 69306220 is 2260396.

It is not an unprimeable number, because it can be changed into a prime (69306227) 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 7 ways as a sum of consecutive naturals, for example, 54 + ... + 11773.

It is an arithmetic number, because the mean of its divisors is an integer number (6085506).

Almost surely, 269306220 is an apocalyptic number.

It is an amenable number.

69306220 is an abundant number, since it is smaller than the sum of its proper divisors (76745924).

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

69306220 is a wasteful number, since it uses less digits than its factorization.

69306220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12129 (or 12127 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 69306220 is about 8325.0357356590. The cubic root of 69306220 is about 410.7624519477.

The spelling of 69306220 in words is "sixty-nine million, three hundred six thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 293 586 1172 1465 2930 5860 11827 23654 47308 59135 118270 236540 3465311 6930622 13861244 17326555 34653110 69306220