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2980778485 = 52965331481
BaseRepresentation
bin1011000110101011…
…0001000111110101
321200201212020101011
42301222301013311
522101034402420
61211440232221
7133603125166
oct26152610765
97621766334
102980778485
11129a631aa3
126b230b671
13386714569
14203c4176d
15126a4895a
hexb1ab11f5

2980778485 has 16 divisors (see below), whose sum is σ = 3706061040. Its totient is φ = 2298795520.

The previous prime is 2980778483. The next prime is 2980778513. The reversal of 2980778485 is 5848770892.

It can be written as a sum of positive squares in 8 ways, for example, as 608016964 + 2372761521 = 24658^2 + 48711^2 .

It is not a de Polignac number, because 2980778485 - 21 = 2980778483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2980778483) 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 15 ways as a sum of consecutive naturals, for example, 78945 + ... + 110425.

It is an arithmetic number, because the mean of its divisors is an integer number (231628815).

Almost surely, 22980778485 is an apocalyptic number.

It is an amenable number.

2980778485 is a deficient number, since it is larger than the sum of its proper divisors (725282555).

2980778485 is a wasteful number, since it uses less digits than its factorization.

2980778485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32168.

The product of its (nonzero) digits is 9031680, while the sum is 58.

The square root of 2980778485 is about 54596.5061611089. The cubic root of 2980778485 is about 1439.1627213724.

The spelling of 2980778485 in words is "two billion, nine hundred eighty million, seven hundred seventy-eight thousand, four hundred eighty-five".

Divisors: 1 5 29 145 653 3265 18937 31481 94685 157405 912949 4564745 20557093 102785465 596155697 2980778485