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2757207980 = 225564124439
BaseRepresentation
bin1010010001010111…
…1010011110101100
321010011011200022002
42210111322132230
521121321123410
61133332311432
7125216611142
oct24425723654
97104150262
102757207980
11119541018a
1264b472578
1334c2c6917
141c2285592
151120d57a5
hexa457a7ac

2757207980 has 24 divisors (see below), whose sum is σ = 5791400160. Its totient is φ = 1102642560.

The previous prime is 2757207967. The next prime is 2757207997. The reversal of 2757207980 is 897027572.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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, 100601 + ... + 125039.

It is an arithmetic number, because the mean of its divisors is an integer number (241308340).

Almost surely, 22757207980 is an apocalyptic number.

2757207980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2757207980 is an abundant number, since it is smaller than the sum of its proper divisors (3034192180).

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

2757207980 is a wasteful number, since it uses less digits than its factorization.

2757207980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30089 (or 30087 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 47.

The square root of 2757207980 is about 52509.1228264194. The cubic root of 2757207980 is about 1402.2426606646.

The spelling of 2757207980 in words is "two billion, seven hundred fifty-seven million, two hundred seven thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 5641 11282 22564 24439 28205 48878 56410 97756 112820 122195 244390 488780 137860399 275720798 551441596 689301995 1378603990 2757207980