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1368422280 = 233253801173
BaseRepresentation
bin101000110010000…
…0111011110001000
310112100221001110200
41101210013132020
510300304003110
6343442012200
745624253221
oct12144073610
93470831420
101368422280
11642490a05
12322347060
1318a673634
14cda52248
15802086c0
hex51907788

1368422280 has 48 divisors (see below), whose sum is σ = 4447373580. Its totient is φ = 364912512.

The previous prime is 1368422213. The next prime is 1368422287. The reversal of 1368422280 is 822248631.

It can be written as a sum of positive squares in 2 ways, for example, as 1137443076 + 230979204 = 33726^2 + 15198^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1368422287) 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 11 ways as a sum of consecutive naturals, for example, 1900227 + ... + 1900946.

Almost surely, 21368422280 is an apocalyptic number.

1368422280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1368422280 is an abundant number, since it is smaller than the sum of its proper divisors (3078951300).

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

1368422280 is a wasteful number, since it uses less digits than its factorization.

1368422280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3801190 (or 3801183 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 1368422280 is about 36992.1921491549. The cubic root of 1368422280 is about 1110.2140322602.

The spelling of 1368422280 in words is "one billion, three hundred sixty-eight million, four hundred twenty-two thousand, two hundred eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 18 20 24 30 36 40 45 60 72 90 120 180 360 3801173 7602346 11403519 15204692 19005865 22807038 30409384 34210557 38011730 45614076 57017595 68421114 76023460 91228152 114035190 136842228 152046920 171052785 228070380 273684456 342105570 456140760 684211140 1368422280