Base | Representation |
---|---|
bin | 10111110011101011010101 |
3 | 102202002000110 |
4 | 113303223111 |
5 | 3044202411 |
6 | 341433233 |
7 | 104022165 |
oct | 27635325 |
9 | 12662013 |
10 | 6240981 |
11 | 3582a3a |
12 | 210b819 |
13 | 13a68b6 |
14 | b865a5 |
15 | 8342a6 |
hex | 5f3ad5 |
6240981 has 16 divisors (see below), whose sum is σ = 8755200. Its totient is φ = 3946800.
The previous prime is 6240973. The next prime is 6240991. The reversal of 6240981 is 1890426.
It is not a de Polignac number, because 6240981 - 23 = 6240973 is a prime.
It is a super-2 number, since 2×62409812 = 77899687684722, which contains 22 as substring.
6240981 is a lucky number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (6240991) 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, 10120 + ... + 10718.
It is an arithmetic number, because the mean of its divisors is an integer number (547200).
Almost surely, 26240981 is an apocalyptic number.
It is an amenable number.
6240981 is a deficient number, since it is larger than the sum of its proper divisors (2514219).
6240981 is a wasteful number, since it uses less digits than its factorization.
6240981 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 776.
The product of its (nonzero) digits is 3456, while the sum is 30.
The square root of 6240981 is about 2498.1955487912. The cubic root of 6240981 is about 184.1129288648.
The spelling of 6240981 in words is "six million, two hundred forty thousand, nine hundred eighty-one".
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