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38134487980 = 2252482176819
BaseRepresentation
bin100011100000111111…
…100001101110101100
310122102122202201002201
4203200333201232230
51111044412103410
625304014231244
72520002541151
oct434077415654
9118378681081
1038134487980
1115199a19276
1274831b5524
1337997356b4
141bba920228
15ed2d3c83a
hex8e0fe1bac

38134487980 has 24 divisors (see below), whose sum is σ = 80086693680. Its totient is φ = 15252982080.

The previous prime is 38134487971. The next prime is 38134487987. The reversal of 38134487980 is 8978443183.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (38134487987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 458011 + ... + 534829.

It is an arithmetic number, because the mean of its divisors is an integer number (3336945570).

Almost surely, 238134487980 is an apocalyptic number.

It is an amenable number.

38134487980 is an abundant number, since it is smaller than the sum of its proper divisors (41952205700).

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

38134487980 is a wasteful number, since it uses less digits than its factorization.

38134487980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101649 (or 101647 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 55.

The spelling of 38134487980 in words is "thirty-eight billion, one hundred thirty-four million, four hundred eighty-seven thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 24821 49642 76819 99284 124105 153638 248210 307276 384095 496420 768190 1536380 1906724399 3813448798 7626897596 9533621995 19067243990 38134487980