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264144260 = 22513207213
BaseRepresentation
bin11111011111010…
…00010110000100
3200102000220210202
433233220112010
51020110104020
642113310032
76355121612
oct1757502604
9612026722
10264144260
11126114546
1274565318
13429556a3
142711c6b2
15182c9e75
hexfbe8584

264144260 has 12 divisors (see below), whose sum is σ = 554702988. Its totient is φ = 105657696.

The previous prime is 264144233. The next prime is 264144269. The reversal of 264144260 is 62441462.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 109788484 + 154355776 = 10478^2 + 12424^2 .

It is not an unprimeable number, because it can be changed into a prime (264144269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6603587 + ... + 6603626.

It is an arithmetic number, because the mean of its divisors is an integer number (46225249).

Almost surely, 2264144260 is an apocalyptic number.

264144260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

264144260 is an abundant number, since it is smaller than the sum of its proper divisors (290558728).

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

264144260 is a wasteful number, since it uses less digits than its factorization.

264144260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13207222 (or 13207220 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 264144260 is about 16252.5154976084. The cubic root of 264144260 is about 641.6236929298.

The spelling of 264144260 in words is "two hundred sixty-four million, one hundred forty-four thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 13207213 26414426 52828852 66036065 132072130 264144260