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2872938081 = 313163451933
BaseRepresentation
bin1010101100111101…
…1000111001100001
321102012221101011010
42223033120321201
521340433004311
61153025011133
7131123366526
oct25317307141
97365841133
102872938081
1112447759a2
12682183aa9
1336a287180
141d37ad14d
1511c345da6
hexab3d8e61

2872938081 has 16 divisors (see below), whose sum is σ = 4150561856. Its totient is φ = 1757111616.

The previous prime is 2872938071. The next prime is 2872938127. The reversal of 2872938081 is 1808392782.

It is not a de Polignac number, because 2872938081 - 29 = 2872937569 is a prime.

It is a super-2 number, since 2×28729380812 = 16507546434519925122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2872938081.

It is not an unprimeable number, because it can be changed into a prime (2872938071) 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, 219610 + ... + 232323.

It is an arithmetic number, because the mean of its divisors is an integer number (259410116).

Almost surely, 22872938081 is an apocalyptic number.

It is an amenable number.

2872938081 is a deficient number, since it is larger than the sum of its proper divisors (1277623775).

2872938081 is a wasteful number, since it uses less digits than its factorization.

2872938081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452112.

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 2872938081 is about 53599.7955313264. The cubic root of 2872938081 is about 1421.5934768393.

The spelling of 2872938081 in words is "two billion, eight hundred seventy-two million, nine hundred thirty-eight thousand, eighty-one".

Divisors: 1 3 13 39 163 489 2119 6357 451933 1355799 5875129 17625387 73665079 220995237 957646027 2872938081