Base | Representation |
---|---|
bin | 111001101111… |
… | …100011011001 |
3 | 1001111001001002 |
4 | 321233203121 |
5 | 12333340420 |
6 | 1300234345 |
7 | 242443103 |
oct | 71574331 |
9 | 31431032 |
10 | 15136985 |
11 | 85a9706 |
12 | 509b9b5 |
13 | 319cac6 |
14 | 2020573 |
15 | 14e0075 |
hex | e6f8d9 |
15136985 has 8 divisors (see below), whose sum is σ = 18790920. Its totient is φ = 11691904.
The previous prime is 15136973. The next prime is 15136991. The reversal of 15136985 is 58963151.
It can be written as a sum of positive squares in 4 ways, for example, as 6310144 + 8826841 = 2512^2 + 2971^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 15136985 - 214 = 15120601 is a prime.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52052 + ... + 52341.
It is an arithmetic number, because the mean of its divisors is an integer number (2348865).
Almost surely, 215136985 is an apocalyptic number.
It is an amenable number.
15136985 is a deficient number, since it is larger than the sum of its proper divisors (3653935).
15136985 is a wasteful number, since it uses less digits than its factorization.
15136985 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 104427.
The product of its digits is 32400, while the sum is 38.
The square root of 15136985 is about 3890.6278413644. The cubic root of 15136985 is about 247.3696759723.
The spelling of 15136985 in words is "fifteen million, one hundred thirty-six thousand, nine hundred eighty-five".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.065 sec. • engine limits •