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260576420 = 225137313729
BaseRepresentation
bin11111000100000…
…01010010100100
3200011022122122112
433202001102210
51013201421140
641505020152
76312602006
oct1742012244
9604278575
10260576420
111240a7a15
1273324658
1341ca6740
1426870376
1517d22c65
hexf8814a4

260576420 has 48 divisors (see below), whose sum is σ = 597419760. Its totient is φ = 94887936.

The previous prime is 260576417. The next prime is 260576471. The reversal of 260576420 is 24675062.

It can be written as a sum of positive squares in 8 ways, for example, as 22676644 + 237899776 = 4762^2 + 15424^2 .

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 12116 + ... + 25844.

It is an arithmetic number, because the mean of its divisors is an integer number (12446245).

Almost surely, 2260576420 is an apocalyptic number.

260576420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 260576420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298709880).

260576420 is an abundant number, since it is smaller than the sum of its proper divisors (336843340).

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

260576420 is a wasteful number, since it uses less digits than its factorization.

260576420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13824 (or 13822 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 260576420 is about 16142.3796263128. The cubic root of 260576420 is about 638.7217488204.

The spelling of 260576420 in words is "two hundred sixty million, five hundred seventy-six thousand, four hundred twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 73 130 146 260 292 365 730 949 1460 1898 3796 4745 9490 13729 18980 27458 54916 68645 137290 178477 274580 356954 713908 892385 1002217 1784770 2004434 3569540 4008868 5011085 10022170 13028821 20044340 26057642 52115284 65144105 130288210 260576420