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6838088985 = 335713247911
BaseRepresentation
bin1100101111001010…
…01111010100011001
3122122120001220122000
412113211033110121
5103001022321420
63050311551213
7331311540330
oct62745172431
918576056560
106838088985
112999a17512
1213aa08b509
1384c8c6700
1448c250d17
152a04d5690
hex19794f519

6838088985 has 192 divisors, whose sum is σ = 15381135360. Its totient is φ = 2821029120.

The previous prime is 6838088981. The next prime is 6838088987. The reversal of 6838088985 is 5898808386.

It is not a de Polignac number, because 6838088985 - 22 = 6838088981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (6838088981) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 7505680 + ... + 7506590.

It is an arithmetic number, because the mean of its divisors is an integer number (80110080).

Almost surely, 26838088985 is an apocalyptic number.

6838088985 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6838088985 is an abundant number, since it is smaller than the sum of its proper divisors (8543046375).

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

6838088985 is a wasteful number, since it uses less digits than its factorization.

6838088985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005 (or 986 counting only the distinct ones).

The product of its (nonzero) digits is 26542080, while the sum is 63.

The square root of 6838088985 is about 82692.7384054973. The cubic root of 6838088985 is about 1898.0671928423.

The spelling of 6838088985 in words is "six billion, eight hundred thirty-eight million, eighty-eight thousand, nine hundred eighty-five".