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2757130220 = 2251327111489
BaseRepresentation
bin1010010001010110…
…0111011111101100
321010011000201122002
42210111213133230
521121311131340
61133330511432
7125216135345
oct24425473754
97104021562
102757130220
111195367819
1264b435578
1334c29a400
141c22650cc
151120bc715
hexa45677ec

2757130220 has 72 divisors (see below), whose sum is σ = 6358474080. Its totient is φ = 1003591680.

The previous prime is 2757130169. The next prime is 2757130273. The reversal of 2757130220 is 220317572.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 234236 + ... + 245724.

It is an arithmetic number, because the mean of its divisors is an integer number (88312140).

Almost surely, 22757130220 is an apocalyptic number.

2757130220 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 2757130220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3179237040).

2757130220 is an abundant number, since it is smaller than the sum of its proper divisors (3601343860).

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

2757130220 is a wasteful number, since it uses less digits than its factorization.

2757130220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11595 (or 11580 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 2757130220 is about 52508.3823784355. The cubic root of 2757130220 is about 1402.2294783179.

Adding to 2757130220 its reverse (220317572), we get a palindrome (2977447792).

The spelling of 2757130220 in words is "two billion, seven hundred fifty-seven million, one hundred thirty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 71 130 142 169 260 284 338 355 676 710 845 923 1420 1690 1846 3380 3692 4615 9230 11489 11999 18460 22978 23998 45956 47996 57445 59995 114890 119990 149357 229780 239980 298714 597428 746785 815719 1493570 1631438 1941641 2987140 3262876 3883282 4078595 7766564 8157190 9708205 10604347 16314380 19416410 21208694 38832820 42417388 53021735 106043470 137856511 212086940 275713022 551426044 689282555 1378565110 2757130220