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2561080 = 235431489
BaseRepresentation
bin1001110001010000111000
311211010010211
421301100320
51123423310
6130520504
730524464
oct11612070
94733124
102561080
11149a1a5
12a36134
136b8942
144a94a4
15358c8a
hex271438

2561080 has 32 divisors (see below), whose sum is σ = 5900400. Its totient is φ = 999936.

The previous prime is 2561071. The next prime is 2561089. The reversal of 2561080 is 801652.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2561071) and next prime (2561089).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2561089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 976 + ... + 2464.

22561080 is an apocalyptic number.

2561080 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 2561080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2950200).

2561080 is an abundant number, since it is smaller than the sum of its proper divisors (3339320).

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

2561080 is a wasteful number, since it uses less digits than its factorization.

2561080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1543 (or 1539 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 2561080 is about 1600.3374644118. The cubic root of 2561080 is about 136.8173102589.

The spelling of 2561080 in words is "two million, five hundred sixty-one thousand, eighty".

Divisors: 1 2 4 5 8 10 20 40 43 86 172 215 344 430 860 1489 1720 2978 5956 7445 11912 14890 29780 59560 64027 128054 256108 320135 512216 640270 1280540 2561080