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20086415 = 529831669
BaseRepresentation
bin100110010011…
…1111010001111
31101210111101022
41030213322033
520120231130
61554304355
7332505656
oct114477217
941714338
1020086415
111037a248
1268880bb
13421386b
14294c19d
151b6b7e5
hex1327e8f

20086415 has 16 divisors (see below), whose sum is σ = 25250400. Its totient is φ = 15318912.

The previous prime is 20086403. The next prime is 20086421. The reversal of 20086415 is 51468002.

It is a cyclic number.

It is not a de Polignac number, because 20086415 - 28 = 20086159 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11201 + ... + 12869.

It is an arithmetic number, because the mean of its divisors is an integer number (1578150).

Almost surely, 220086415 is an apocalyptic number.

20086415 is a deficient number, since it is larger than the sum of its proper divisors (5163985).

20086415 is a wasteful number, since it uses less digits than its factorization.

20086415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1786.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 20086415 is about 4481.7870319773. The cubic root of 20086415 is about 271.8321439473.

The spelling of 20086415 in words is "twenty million, eighty-six thousand, four hundred fifteen".

Divisors: 1 5 29 83 145 415 1669 2407 8345 12035 48401 138527 242005 692635 4017283 20086415