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16012685 = 513246349
BaseRepresentation
bin111101000101…
…010110001101
31010010112021102
4331011112031
513044401220
61331112445
7253051133
oct75052615
933115242
1016012685
119047627
125442725
133418580
1421ab753
151614775
hexf4558d

16012685 has 8 divisors (see below), whose sum is σ = 20693400. Its totient is φ = 11824704.

The previous prime is 16012681. The next prime is 16012693. The reversal of 16012685 is 58621061.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 346921 + 15665764 = 589^2 + 3958^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 16012685 - 22 = 16012681 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16012681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123110 + ... + 123239.

It is an arithmetic number, because the mean of its divisors is an integer number (2586675).

Almost surely, 216012685 is an apocalyptic number.

It is an amenable number.

16012685 is a deficient number, since it is larger than the sum of its proper divisors (4680715).

16012685 is a wasteful number, since it uses less digits than its factorization.

16012685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246367.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 16012685 is about 4001.5853108487. The cubic root of 16012685 is about 252.0507844655.

The spelling of 16012685 in words is "sixteen million, twelve thousand, six hundred eighty-five".

Divisors: 1 5 13 65 246349 1231745 3202537 16012685