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2808028982 = 2116111318517
BaseRepresentation
bin1010011101011111…
…0001111100110110
321020200210122121102
42213113301330312
521222323411412
61142345450102
7126404565263
oct24727617466
97220718542
102808028982
111211071810
126644a0932
133599ab915
141c8d1426a
151167c38c2
hexa75f1f36

2808028982 has 32 divisors (see below), whose sum is σ = 4711868064. Its totient is φ = 1244275200.

The previous prime is 2808028963. The next prime is 2808028997. The reversal of 2808028982 is 2898208082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142388 + ... + 160904.

It is an arithmetic number, because the mean of its divisors is an integer number (147245877).

Almost surely, 22808028982 is an apocalyptic number.

2808028982 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2808028982 is a deficient number, since it is larger than the sum of its proper divisors (1903839082).

2808028982 is a wasteful number, since it uses less digits than its factorization.

2808028982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18704.

The product of its (nonzero) digits is 294912, while the sum is 47.

The square root of 2808028982 is about 52990.8386610365. The cubic root of 2808028982 is about 1410.8056663467.

The spelling of 2808028982 in words is "two billion, eight hundred eight million, twenty-eight thousand, nine hundred eighty-two".

Divisors: 1 2 11 22 61 113 122 226 671 1243 1342 2486 6893 13786 18517 37034 75823 151646 203687 407374 1129537 2092421 2259074 4184842 12424907 23016631 24849814 46033262 127637681 255275362 1404014491 2808028982