Base | Representation |
---|---|
bin | 100110000100… |
… | …111001001000 |
3 | 200210010001122 |
4 | 212010321020 |
5 | 10023402022 |
6 | 553534412 |
7 | 150561422 |
oct | 46047110 |
9 | 20703048 |
10 | 9981512 |
11 | 56a8292 |
12 | 3414408 |
13 | 20b6328 |
14 | 147b812 |
15 | d22742 |
hex | 984e48 |
9981512 has 12 divisors (see below), whose sum is σ = 18732105. Its totient is φ = 4986288.
The previous prime is 9981467. The next prime is 9981551. The reversal of 9981512 is 2151899.
It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.
It can be written as a sum of positive squares in 2 ways, for example, as 7043716 + 2937796 = 2654^2 + 1714^2 .
It is an ABA number since it can be written as A⋅BA, here for A=2, B=2234.
It is a super-2 number, since 2×99815122 = 199261163612288, which contains 22 as substring.
It is a Duffinian number.
It is an unprimeable number.
It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 8378 + ... + 9494.
Almost surely, 29981512 is an apocalyptic number.
It is an amenable number.
9981512 is a deficient number, since it is larger than the sum of its proper divisors (8750593).
9981512 is an equidigital number, since it uses as much as digits as its factorization.
9981512 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2240 (or 1119 counting only the distinct ones).
The product of its digits is 6480, while the sum is 35.
The square root of 9981512 is about 3159.3530983415. The cubic root of 9981512 is about 215.3106164684.
The spelling of 9981512 in words is "nine million, nine hundred eighty-one thousand, five hundred twelve".
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