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16087105 = 53217421
BaseRepresentation
bin111101010111…
…100001000001
31010021022100201
4331113201001
513104241410
61332445201
7253511116
oct75274101
933238321
1016087105
119098531
125479801
1334433c8
1421ca90d
15162b83a
hexf57841

16087105 has 4 divisors (see below), whose sum is σ = 19304532. Its totient is φ = 12869680.

The previous prime is 16087081. The next prime is 16087111. The reversal of 16087105 is 50178061.

It is a happy number.

16087105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11888704 + 4198401 = 3448^2 + 2049^2 .

It is not a de Polignac number, because 16087105 - 25 = 16087073 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1608706 + ... + 1608715.

It is an arithmetic number, because the mean of its divisors is an integer number (4826133).

Almost surely, 216087105 is an apocalyptic number.

It is an amenable number.

16087105 is a deficient number, since it is larger than the sum of its proper divisors (3217427).

16087105 is an equidigital number, since it uses as much as digits as its factorization.

16087105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3217426.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 16087105 is about 4010.8733462926. The cubic root of 16087105 is about 252.4406552688.

The spelling of 16087105 in words is "sixteen million, eighty-seven thousand, one hundred five".

Divisors: 1 5 3217421 16087105