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2840048988 = 2237157215351
BaseRepresentation
bin1010100101000111…
…1011010101011100
321022221001102210120
42221101323111130
521304023031423
61145452034540
7130244006130
oct25121732534
97287042716
102840048988
111228151927
12673162a50
1336351017a
141cd28b3c0
151194eaee3
hexa947b55c

2840048988 has 48 divisors (see below), whose sum is σ = 7621737984. Its totient is φ = 806270400.

The previous prime is 2840048987. The next prime is 2840049011. The reversal of 2840048988 is 8898400482.

It is a self number, because there is not a number n which added to its sum of digits gives 2840048988.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2840048987) 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, 94488 + ... + 120863.

It is an arithmetic number, because the mean of its divisors is an integer number (158786208).

Almost surely, 22840048988 is an apocalyptic number.

2840048988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2840048988 is an abundant number, since it is smaller than the sum of its proper divisors (4781688996).

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

2840048988 is a wasteful number, since it uses less digits than its factorization.

2840048988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215522 (or 215520 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 51.

The square root of 2840048988 is about 53292.1099976347. The cubic root of 2840048988 is about 1416.1478926413.

The spelling of 2840048988 in words is "two billion, eight hundred forty million, forty-eight thousand, nine hundred eighty-eight".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 84 157 314 471 628 942 1099 1884 2198 3297 4396 6594 13188 215351 430702 646053 861404 1292106 1507457 2584212 3014914 4522371 6029828 9044742 18089484 33810107 67620214 101430321 135240428 202860642 236670749 405721284 473341498 710012247 946682996 1420024494 2840048988