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16285145 = 510929881
BaseRepresentation
bin111110000111…
…110111011001
31010122101000112
4332013313121
513132111040
61341014105
7255264362
oct76076731
933571015
1016285145
1192132a8
125554335
1334b25a6
14223cb69
15166a365
hexf87dd9

16285145 has 8 divisors (see below), whose sum is σ = 19722120. Its totient is φ = 12908160.

The previous prime is 16285117. The next prime is 16285177. The reversal of 16285145 is 54158261.

It can be written as a sum of positive squares in 4 ways, for example, as 635209 + 15649936 = 797^2 + 3956^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16285145 - 212 = 16281049 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14396 + ... + 15485.

It is an arithmetic number, because the mean of its divisors is an integer number (2465265).

Almost surely, 216285145 is an apocalyptic number.

It is an amenable number.

16285145 is a deficient number, since it is larger than the sum of its proper divisors (3436975).

16285145 is a wasteful number, since it uses less digits than its factorization.

16285145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29995.

The product of its digits is 9600, while the sum is 32.

The square root of 16285145 is about 4035.4857204555. The cubic root of 16285145 is about 253.4723219693.

The spelling of 16285145 in words is "sixteen million, two hundred eighty-five thousand, one hundred forty-five".

Divisors: 1 5 109 545 29881 149405 3257029 16285145