Base | Representation |
---|---|
bin | 11101110000110011100001 |
3 | 112200101102222 |
4 | 131300303201 |
5 | 3444131311 |
6 | 435120425 |
7 | 123213410 |
oct | 35606341 |
9 | 15611388 |
10 | 7802081 |
11 | 4449901 |
12 | 2743115 |
13 | 1802321 |
14 | 1071477 |
15 | a41adb |
hex | 770ce1 |
7802081 has 8 divisors (see below), whose sum is σ = 8935104. Its totient is φ = 6673680.
The previous prime is 7802059. The next prime is 7802107. The reversal of 7802081 is 1802087.
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 7802081 - 26 = 7802017 is a prime.
It is a super-2 number, since 2×78020812 = 121744935861122, which contains 22 as substring.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 7802081.
It is not an unprimeable number, because it can be changed into a prime (7802051) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4031 + ... + 5643.
It is an arithmetic number, because the mean of its divisors is an integer number (1116888).
Almost surely, 27802081 is an apocalyptic number.
7802081 is the 1613-rd octagonal number.
It is an amenable number.
7802081 is a deficient number, since it is larger than the sum of its proper divisors (1133023).
7802081 is a wasteful number, since it uses less digits than its factorization.
7802081 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2311.
The product of its (nonzero) digits is 896, while the sum is 26.
The square root of 7802081 is about 2793.2205426711. The cubic root of 7802081 is about 198.3368835526.
The spelling of 7802081 in words is "seven million, eight hundred two thousand, eighty-one".
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