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16138130 = 251613813
BaseRepresentation
bin111101100011…
…111110010010
31010100220100112
4331203332102
513112410010
61333521322
7254112641
oct75437622
933326315
1016138130
1191228a8
1254a3242
1334606b8
142201358
15163ba05
hexf63f92

16138130 has 8 divisors (see below), whose sum is σ = 29048652. Its totient is φ = 6455248.

The previous prime is 16138097. The next prime is 16138139. The reversal of 16138130 is 3183161.

It can be written as a sum of positive squares in 2 ways, for example, as 16072081 + 66049 = 4009^2 + 257^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16138096 and 16138105.

It is not an unprimeable number, because it can be changed into a prime (16138139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 806897 + ... + 806916.

Almost surely, 216138130 is an apocalyptic number.

16138130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16138130 is a deficient number, since it is larger than the sum of its proper divisors (12910522).

16138130 is a wasteful number, since it uses less digits than its factorization.

16138130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1613820.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 16138130 is about 4017.2291445722. The cubic root of 16138130 is about 252.7072702580.

The spelling of 16138130 in words is "sixteen million, one hundred thirty-eight thousand, one hundred thirty".

Divisors: 1 2 5 10 1613813 3227626 8069065 16138130