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135090785 = 5109247873
BaseRepresentation
bin10000000110101…
…01001001100001
3100102012022201102
420003111021201
5234040401120
621223244145
73230152454
oct1003251141
9312168642
10135090785
116a289785
12392a9655
1321cab99b
1413d2749b
15bcd6d75
hex80d5261

135090785 has 8 divisors (see below), whose sum is σ = 163596840. Its totient is φ = 107080704.

The previous prime is 135090773. The next prime is 135090841. The reversal of 135090785 is 587090531.

It can be written as a sum of positive squares in 4 ways, for example, as 7491169 + 127599616 = 2737^2 + 11296^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135090785 - 210 = 135089761 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123392 + ... + 124481.

It is an arithmetic number, because the mean of its divisors is an integer number (20449605).

Almost surely, 2135090785 is an apocalyptic number.

It is an amenable number.

135090785 is a deficient number, since it is larger than the sum of its proper divisors (28506055).

135090785 is a wasteful number, since it uses less digits than its factorization.

135090785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247987.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 135090785 is about 11622.8561464039. The cubic root of 135090785 is about 513.1077509516.

The spelling of 135090785 in words is "one hundred thirty-five million, ninety thousand, seven hundred eighty-five".