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16040985 = 351099811
BaseRepresentation
bin111101001100…
…010000011001
31010011222002120
4331030100121
513101302420
61331451453
7253226502
oct75142031
933158076
1016040985
119066914
125456b89
13342840c
1421b7ba9
15161cd40
hexf4c419

16040985 has 16 divisors (see below), whose sum is σ = 25903680. Its totient is φ = 8475840.

The previous prime is 16040977. The next prime is 16041001. The reversal of 16040985 is 58904061.

It is not a de Polignac number, because 16040985 - 23 = 16040977 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3271 + ... + 6540.

It is an arithmetic number, because the mean of its divisors is an integer number (1618980).

Almost surely, 216040985 is an apocalyptic number.

16040985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16040985 is a deficient number, since it is larger than the sum of its proper divisors (9862695).

16040985 is a wasteful number, since it uses less digits than its factorization.

16040985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9928.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 16040985 is about 4005.1198483941. The cubic root of 16040985 is about 252.1991842942.

The spelling of 16040985 in words is "sixteen million, forty thousand, nine hundred eighty-five".

Divisors: 1 3 5 15 109 327 545 1635 9811 29433 49055 147165 1069399 3208197 5346995 16040985