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16052805 = 3252912301
BaseRepresentation
bin111101001111…
…001001000101
31010012120022100
4331033021011
513102142210
61332022313
7253306116
oct75171105
933176270
1016052805
11907478a
125461999
133430902
1421bc20d
1516215c0
hexf4f245

16052805 has 24 divisors (see below), whose sum is σ = 28786680. Its totient is φ = 8265600.

The previous prime is 16052797. The next prime is 16052807. The reversal of 16052805 is 50825061.

It can be written as a sum of positive squares in 4 ways, for example, as 1052676 + 15000129 = 1026^2 + 3873^2 .

It is not a de Polignac number, because 16052805 - 23 = 16052797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16052807) 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 23 ways as a sum of consecutive naturals, for example, 4846 + ... + 7455.

It is an arithmetic number, because the mean of its divisors is an integer number (1199445).

Almost surely, 216052805 is an apocalyptic number.

16052805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16052805 is a deficient number, since it is larger than the sum of its proper divisors (12733875).

16052805 is a wasteful number, since it uses less digits than its factorization.

16052805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12341 (or 12338 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 16052805 is about 4006.5951879370. The cubic root of 16052805 is about 252.2611144576.

Adding to 16052805 its reverse (50825061), we get a palindrome (66877866).

The spelling of 16052805 in words is "sixteen million, fifty-two thousand, eight hundred five".

Divisors: 1 3 5 9 15 29 45 87 145 261 435 1305 12301 36903 61505 110709 184515 356729 553545 1070187 1783645 3210561 5350935 16052805