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16054985 = 54178317
BaseRepresentation
bin111101001111…
…101011001001
31010012200022002
4331033223021
513102224420
61332040345
7253315352
oct75175311
933180262
1016054985
119076391
1254630b5
1334318bb
1421bcd29
151622075
hexf4fac9

16054985 has 8 divisors (see below), whose sum is σ = 19736136. Its totient is φ = 12530560.

The previous prime is 16054901. The next prime is 16054991. The reversal of 16054985 is 58945061.

It can be written as a sum of positive squares in 4 ways, for example, as 30976 + 16024009 = 176^2 + 4003^2 .

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

It is not a de Polignac number, because 16054985 - 28 = 16054729 is a prime.

It is a Duffinian number.

It is a Curzon number.

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, 38954 + ... + 39363.

It is an arithmetic number, because the mean of its divisors is an integer number (2467017).

Almost surely, 216054985 is an apocalyptic number.

It is an amenable number.

16054985 is a deficient number, since it is larger than the sum of its proper divisors (3681151).

16054985 is an equidigital number, since it uses as much as digits as its factorization.

16054985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78363.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 16054985 is about 4006.8672301438. The cubic root of 16054985 is about 252.2725331128.

The spelling of 16054985 in words is "sixteen million, fifty-four thousand, nine hundred eighty-five".

Divisors: 1 5 41 205 78317 391585 3210997 16054985