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2748768040 = 235127753813
BaseRepresentation
bin1010001111010110…
…1101111100101000
321002120021212212201
42203311231330220
521112141034130
61132431345544
7125055066664
oct24365557450
97076255781
102748768040
111190676127
126486822b4
1334a630185
141c10c98a4
151114b9bca
hexa3d6df28

2748768040 has 32 divisors (see below), whose sum is σ = 6189686280. Its totient is φ = 1098625792.

The previous prime is 2748768037. The next prime is 2748768067. The reversal of 2748768040 is 408678472.

It can be written as a sum of positive squares in 4 ways, for example, as 2421230436 + 327537604 = 49206^2 + 18098^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24174 + ... + 77986.

Almost surely, 22748768040 is an apocalyptic number.

2748768040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2748768040 is an abundant number, since it is smaller than the sum of its proper divisors (3440918240).

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

2748768040 is a wasteful number, since it uses less digits than its factorization.

2748768040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55101 (or 55097 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 46.

The square root of 2748768040 is about 52428.6948149580. The cubic root of 2748768040 is about 1400.8104219347.

The spelling of 2748768040 in words is "two billion, seven hundred forty-eight million, seven hundred sixty-eight thousand, forty".

Divisors: 1 2 4 5 8 10 20 40 1277 2554 5108 6385 10216 12770 25540 51080 53813 107626 215252 269065 430504 538130 1076260 2152520 68719201 137438402 274876804 343596005 549753608 687192010 1374384020 2748768040