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2583128780 = 225129156439
BaseRepresentation
bin1001100111110111…
…0110101011001100
320200000121112112022
42121331312223030
520242240110110
61104153225312
7121004142461
oct23175665314
96600545468
102583128780
111106121981
12601102238
1332221698b
141a70cd668
15101b9b755
hex99f76acc

2583128780 has 12 divisors (see below), whose sum is σ = 5424570480. Its totient is φ = 1033251504.

The previous prime is 2583128771. The next prime is 2583128797. The reversal of 2583128780 is 878213852.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64578200 + ... + 64578239.

It is an arithmetic number, because the mean of its divisors is an integer number (452047540).

Almost surely, 22583128780 is an apocalyptic number.

2583128780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2583128780 is an abundant number, since it is smaller than the sum of its proper divisors (2841441700).

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

2583128780 is a wasteful number, since it uses less digits than its factorization.

2583128780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129156448 (or 129156446 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 44.

The square root of 2583128780 is about 50824.4899630090. The cubic root of 2583128780 is about 1372.0881683374.

The spelling of 2583128780 in words is "two billion, five hundred eighty-three million, one hundred twenty-eight thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 129156439 258312878 516625756 645782195 1291564390 2583128780