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290806060 = 22571204793
BaseRepresentation
bin10001010101010…
…101100100101100
3202021012110220211
4101111111210230
51043421243220
644504552204
710130545036
oct2125254454
9667173824
10290806060
1113a174996
1281482664
134832c0bc
142a89cc56
151a7e4b5a
hex1155592c

290806060 has 24 divisors (see below), whose sum is σ = 619297056. Its totient is φ = 114683520.

The previous prime is 290806013. The next prime is 290806069. The reversal of 290806060 is 60608092.

It is not an unprimeable number, because it can be changed into a prime (290806069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100977 + ... + 103816.

It is an arithmetic number, because the mean of its divisors is an integer number (25804044).

Almost surely, 2290806060 is an apocalyptic number.

290806060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

290806060 is an abundant number, since it is smaller than the sum of its proper divisors (328490996).

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

290806060 is a wasteful number, since it uses less digits than its factorization.

290806060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204873 (or 204871 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 290806060 is about 17053.0366797236. The cubic root of 290806060 is about 662.5232914560.

The spelling of 290806060 in words is "two hundred ninety million, eight hundred six thousand, sixty".

Divisors: 1 2 4 5 10 20 71 142 284 355 710 1420 204793 409586 819172 1023965 2047930 4095860 14540303 29080606 58161212 72701515 145403030 290806060