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16109047 = 174322037
BaseRepresentation
bin111101011100…
…110111110111
31010022102110101
4331130313313
513110442142
61333134531
7253632103
oct75346767
933272411
1016109047
119102a69
12548a447
1334503a6
1421d4903
1516330b7
hexf5cdf7

16109047 has 8 divisors (see below), whose sum is σ = 17454096. Its totient is φ = 14808192.

The previous prime is 16109033. The next prime is 16109059. The reversal of 16109047 is 74090161.

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 16109047 - 27 = 16108919 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 (16109077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10288 + ... + 11749.

It is an arithmetic number, because the mean of its divisors is an integer number (2181762).

Almost surely, 216109047 is an apocalyptic number.

16109047 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

16109047 is a deficient number, since it is larger than the sum of its proper divisors (1345049).

16109047 is a wasteful number, since it uses less digits than its factorization.

16109047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22097.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 16109047 is about 4013.6077287149. The cubic root of 16109047 is about 252.5553752352. Note that the first 3 decimals are identical.

The spelling of 16109047 in words is "sixteen million, one hundred nine thousand, forty-seven".

Divisors: 1 17 43 731 22037 374629 947591 16109047