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16145269 = 719233521
BaseRepresentation
bin111101100101…
…101101110101
31010101021010221
4331211231311
513113122034
61334014341
7254142520
oct75455565
933337127
1016145269
1191281a8
1254a73b1
133463a1a
142203bb7
15163dbb4
hexf65b75

16145269 has 16 divisors (see below), whose sum is σ = 19543680. Its totient is φ = 13029120.

The previous prime is 16145251. The next prime is 16145303. The reversal of 16145269 is 96254161.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-16145269 is a prime.

It is a super-2 number, since 2×161452692 = 521339422164722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16145219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30729 + ... + 31249.

It is an arithmetic number, because the mean of its divisors is an integer number (1221480).

Almost surely, 216145269 is an apocalyptic number.

16145269 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

16145269 is a deficient number, since it is larger than the sum of its proper divisors (3398411).

16145269 is a wasteful number, since it uses less digits than its factorization.

16145269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780.

The product of its digits is 12960, while the sum is 34.

The square root of 16145269 is about 4018.1175940980. The cubic root of 16145269 is about 252.7445280082.

The spelling of 16145269 in words is "sixteen million, one hundred forty-five thousand, two hundred sixty-nine".

Divisors: 1 7 19 133 233 521 1631 3647 4427 9899 30989 69293 121393 849751 2306467 16145269