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2580238180 = 225139923993
BaseRepresentation
bin1001100111001011…
…0100111101100100
320122211011200101001
42121302310331210
520241020110210
61104011243044
7120640443202
oct23162647544
96584150331
102580238180
111104528153
12600149484
13321744070
141a697a072
151017ca03a
hex99cb4f64

2580238180 has 24 divisors (see below), whose sum is σ = 5835308472. Its totient is φ = 952703232.

The previous prime is 2580238163. The next prime is 2580238183. The reversal of 2580238180 is 818320852.

It can be written as a sum of positive squares in 4 ways, for example, as 169624576 + 2410613604 = 13024^2 + 49098^2 .

It is not an unprimeable number, because it can be changed into a prime (2580238183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4961737 + ... + 4962256.

It is an arithmetic number, because the mean of its divisors is an integer number (243137853).

Almost surely, 22580238180 is an apocalyptic number.

2580238180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2580238180 is an abundant number, since it is smaller than the sum of its proper divisors (3255070292).

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

2580238180 is a wasteful number, since it uses less digits than its factorization.

2580238180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9924015 (or 9924013 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 2580238180 is about 50796.0449247774. The cubic root of 2580238180 is about 1371.5761744552.

The spelling of 2580238180 in words is "two billion, five hundred eighty million, two hundred thirty-eight thousand, one hundred eighty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 9923993 19847986 39695972 49619965 99239930 129011909 198479860 258023818 516047636 645059545 1290119090 2580238180