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16316387 = 17991153
BaseRepresentation
bin111110001111…
…011111100011
31010200221212122
4332033133203
513134111022
61341414455
7255454433
oct76173743
933627778
1016316387
11923481a
12556a42b
1334c3889
14224a2c3
151674742
hexf8f7e3

16316387 has 4 divisors (see below), whose sum is σ = 16407720. Its totient is φ = 16225056.

The previous prime is 16316369. The next prime is 16316411. The reversal of 16316387 is 78361361.

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

It is a cyclic number.

It is not a de Polignac number, because 16316387 - 212 = 16312291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16316317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45398 + ... + 45755.

It is an arithmetic number, because the mean of its divisors is an integer number (4101930).

Almost surely, 216316387 is an apocalyptic number.

16316387 is a deficient number, since it is larger than the sum of its proper divisors (91333).

16316387 is an equidigital number, since it uses as much as digits as its factorization.

16316387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91332.

The product of its digits is 18144, while the sum is 35.

The square root of 16316387 is about 4039.3547752085. The cubic root of 16316387 is about 253.6343085253.

The spelling of 16316387 in words is "sixteen million, three hundred sixteen thousand, three hundred eighty-seven".

Divisors: 1 179 91153 16316387