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2680258560 = 2153571941
BaseRepresentation
bin1001111111000001…
…1000000000000000
320220210101020112120
42133300120000000
520442121233220
61121543124240
7123263551620
oct23760300000
96823336476
102680258560
111155a32a21
12629743680
13339393c15
141b5d74880
1510a485a40
hex9fc18000

2680258560 has 512 divisors, whose sum is σ = 10569484800. Its totient is φ = 566231040.

The previous prime is 2680258531. The next prime is 2680258643. The reversal of 2680258560 is 658520862.

It is a tau number, because it is divible by the number of its divisors (512).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65372140 + ... + 65372180.

It is an arithmetic number, because the mean of its divisors is an integer number (20643525).

Almost surely, 22680258560 is an apocalyptic number.

2680258560 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 2680258560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5284742400).

2680258560 is an abundant number, since it is smaller than the sum of its proper divisors (7889226240).

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

2680258560 is an equidigital number, since it uses as much as digits as its factorization.

2680258560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 42.

The square root of 2680258560 is about 51771.2136230164. The cubic root of 2680258560 is about 1389.0745802663.

The spelling of 2680258560 in words is "two billion, six hundred eighty million, two hundred fifty-eight thousand, five hundred sixty".