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260412580 = 22513020629
BaseRepresentation
bin11111000010110…
…01010010100100
3200011000022220101
433201121102210
51013131200310
641501313444
76311320231
oct1741312244
9604008811
10260412580
11123aa590a
1273265884
1341c49cac
142682a788
1517cde43a
hexf8594a4

260412580 has 12 divisors (see below), whose sum is σ = 546866460. Its totient is φ = 104165024.

The previous prime is 260412553. The next prime is 260412587. The reversal of 260412580 is 85214062.

It can be written as a sum of positive squares in 2 ways, for example, as 195384484 + 65028096 = 13978^2 + 8064^2 .

It is not an unprimeable number, because it can be changed into a prime (260412587) 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 3 ways as a sum of consecutive naturals, for example, 6510295 + ... + 6510334.

It is an arithmetic number, because the mean of its divisors is an integer number (45572205).

Almost surely, 2260412580 is an apocalyptic number.

260412580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

260412580 is an abundant number, since it is smaller than the sum of its proper divisors (286453880).

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

260412580 is a wasteful number, since it uses less digits than its factorization.

260412580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13020638 (or 13020636 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 260412580 is about 16137.3039879653. The cubic root of 260412580 is about 638.5878532159.

The spelling of 260412580 in words is "two hundred sixty million, four hundred twelve thousand, five hundred eighty".

Divisors: 1 2 4 5 10 20 13020629 26041258 52082516 65103145 130206290 260412580