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16106887 = 31519577
BaseRepresentation
bin111101011100…
…010110000111
31010022022111101
4331130112013
513110410022
61333120531
7253622566
oct75342607
933268441
1016106887
119101385
125489147
13344c404
1421d3bdd
151632627
hexf5c587

16106887 has 4 divisors (see below), whose sum is σ = 16626496. Its totient is φ = 15587280.

The previous prime is 16106873. The next prime is 16106899. The reversal of 16106887 is 78860161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78860161 = 174638833.

It is a cyclic number.

It is not a de Polignac number, because 16106887 - 211 = 16104839 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 (16106807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259758 + ... + 259819.

It is an arithmetic number, because the mean of its divisors is an integer number (4156624).

Almost surely, 216106887 is an apocalyptic number.

16106887 is a deficient number, since it is larger than the sum of its proper divisors (519609).

16106887 is an equidigital number, since it uses as much as digits as its factorization.

16106887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519608.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 16106887 is about 4013.3386351017. The cubic root of 16106887 is about 252.5440866718.

The spelling of 16106887 in words is "sixteen million, one hundred six thousand, eight hundred eighty-seven".

Divisors: 1 31 519577 16106887