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135047887 = 13137191397
BaseRepresentation
bin10000000110010…
…10101011001111
3100102010010212121
420003022223033
5234033013022
621222313411
73226613422
oct1003125317
9312103777
10135047887
116a25a527
1239288867
1321c952c0
1413d159b9
15bcc92c7
hex80caacf

135047887 has 16 divisors (see below), whose sum is σ = 147635712. Its totient is φ = 122791680.

The previous prime is 135047879. The next prime is 135047897. The reversal of 135047887 is 788740531.

It is a cyclic number.

It is not a de Polignac number, because 135047887 - 23 = 135047879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135047827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 339973 + ... + 340369.

It is an arithmetic number, because the mean of its divisors is an integer number (9227232).

Almost surely, 2135047887 is an apocalyptic number.

135047887 is a deficient number, since it is larger than the sum of its proper divisors (12587825).

135047887 is a wasteful number, since it uses less digits than its factorization.

135047887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738.

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 135047887 is about 11621.0105842822. The cubic root of 135047887 is about 513.0534328459.

The spelling of 135047887 in words is "one hundred thirty-five million, forty-seven thousand, eight hundred eighty-seven".

Divisors: 1 13 137 191 397 1781 2483 5161 26167 54389 75827 340171 707057 985751 10388299 135047887