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248490220 = 225111129501
BaseRepresentation
bin11101100111110…
…10100011101100
3122022120121111111
432303322203230
51002103141340
640354001404
76105063166
oct1663724354
9568517444
10248490220
111182a2420
126b276264
133c634444
1425005936
1516c36aea
hexecfa8ec

248490220 has 24 divisors (see below), whose sum is σ = 569269008. Its totient is φ = 90360000.

The previous prime is 248490197. The next prime is 248490223. The reversal of 248490220 is 22094842.

It is not an unprimeable number, because it can be changed into a prime (248490223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 564531 + ... + 564970.

It is an arithmetic number, because the mean of its divisors is an integer number (23719542).

Almost surely, 2248490220 is an apocalyptic number.

248490220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

248490220 is an abundant number, since it is smaller than the sum of its proper divisors (320778788).

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

248490220 is a wasteful number, since it uses less digits than its factorization.

248490220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129521 (or 1129519 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 248490220 is about 15763.5725646187. The cubic root of 248490220 is about 628.6898278049.

The spelling of 248490220 in words is "two hundred forty-eight million, four hundred ninety thousand, two hundred twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 1129501 2259002 4518004 5647505 11295010 12424511 22590020 24849022 49698044 62122555 124245110 248490220