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15073138 = 214950581
BaseRepresentation
bin111001011111…
…111101110010
31001100210110101
4321133331302
512324320023
61255023014
7242056003
oct71377562
931323411
1015073138
118565743
12506aa6a
133179a22
1420051aa
1514cb1ad
hexe5ff72

15073138 has 8 divisors (see below), whose sum is σ = 22761900. Its totient is φ = 7485840.

The previous prime is 15073133. The next prime is 15073187. The reversal of 15073138 is 83137051.

It can be written as a sum of positive squares in 2 ways, for example, as 14845609 + 227529 = 3853^2 + 477^2 .

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

It is not an unprimeable number, because it can be changed into a prime (15073133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24993 + ... + 25588.

Almost surely, 215073138 is an apocalyptic number.

15073138 is a deficient number, since it is larger than the sum of its proper divisors (7688762).

15073138 is a wasteful number, since it uses less digits than its factorization.

15073138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50732.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 15073138 is about 3882.4139398060. The cubic root of 15073138 is about 247.0213884345.

The spelling of 15073138 in words is "fifteen million, seventy-three thousand, one hundred thirty-eight".

Divisors: 1 2 149 298 50581 101162 7536569 15073138