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16230145 = 524113469
BaseRepresentation
bin111101111010…
…011100000001
31010112120120111
4331322130001
513123331040
61335511321
7254645131
oct75723401
933476514
1016230145
119185a48
125528541
133493549
142226ac1
151658dea
hexf7a701

16230145 has 8 divisors (see below), whose sum is σ = 19558440. Its totient is φ = 12929280.

The previous prime is 16230127. The next prime is 16230173. The reversal of 16230145 is 54103261.

It can be written as a sum of positive squares in 4 ways, for example, as 4036081 + 12194064 = 2009^2 + 3492^2 .

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

It is not a de Polignac number, because 16230145 - 25 = 16230113 is a prime.

It is an unprimeable number.

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, 5530 + ... + 7939.

It is an arithmetic number, because the mean of its divisors is an integer number (2444805).

Almost surely, 216230145 is an apocalyptic number.

It is an amenable number.

16230145 is a deficient number, since it is larger than the sum of its proper divisors (3328295).

16230145 is a wasteful number, since it uses less digits than its factorization.

16230145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13715.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 16230145 is about 4028.6654117710. The cubic root of 16230145 is about 253.1866485011.

The spelling of 16230145 in words is "sixteen million, two hundred thirty thousand, one hundred forty-five".

Divisors: 1 5 241 1205 13469 67345 3246029 16230145