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16107985 = 5101167191
BaseRepresentation
bin111101011100…
…100111010001
31010022101000001
4331130213101
513110423420
61333130001
7253626025
oct75344721
933271001
1016107985
119102193
125489901
13344ca6a
1421d4385
151632b0a
hexf5c9d1

16107985 has 16 divisors (see below), whose sum is σ = 19740672. Its totient is φ = 12616000.

The previous prime is 16107979. The next prime is 16108007. The reversal of 16107985 is 58970161.

It is not a de Polignac number, because 16107985 - 29 = 16107473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84240 + ... + 84430.

It is an arithmetic number, because the mean of its divisors is an integer number (1233792).

Almost surely, 216107985 is an apocalyptic number.

It is an amenable number.

16107985 is a deficient number, since it is larger than the sum of its proper divisors (3632687).

16107985 is a wasteful number, since it uses less digits than its factorization.

16107985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 16107985 is about 4013.4754266097. The cubic root of 16107985 is about 252.5498251510.

The spelling of 16107985 in words is "sixteen million, one hundred seven thousand, nine hundred eighty-five".

Divisors: 1 5 101 167 191 505 835 955 16867 19291 31897 84335 96455 159485 3221597 16107985