Base | Representation |
---|---|
bin | 1000001001111… |
… | …01100111001011 |
3 | 11202201120121102 |
4 | 10010331213023 |
5 | 120003103203 |
6 | 10442132015 |
7 | 1460321330 |
oct | 404754713 |
9 | 152646542 |
10 | 68409803 |
11 | 35685330 |
12 | 1aab100b |
13 | 11232a97 |
14 | 912a987 |
15 | 6014888 |
hex | 413d9cb |
68409803 has 16 divisors (see below), whose sum is σ = 86904576. Its totient is φ = 52297440.
The previous prime is 68409793. The next prime is 68409821. The reversal of 68409803 is 30890486.
It is a cyclic number.
It is not a de Polignac number, because 68409803 - 26 = 68409739 is a prime.
It is a super-2 number, since 2×684098032 = 9359802292997618, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (68409883) 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, 4301 + ... + 12462.
It is an arithmetic number, because the mean of its divisors is an integer number (5431536).
Almost surely, 268409803 is an apocalyptic number.
68409803 is a deficient number, since it is larger than the sum of its proper divisors (18494773).
68409803 is a wasteful number, since it uses less digits than its factorization.
68409803 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 16834.
The product of its (nonzero) digits is 41472, while the sum is 38.
The square root of 68409803 is about 8271.0218836611. The cubic root of 68409803 is about 408.9838070438.
The spelling of 68409803 in words is "sixty-eight million, four hundred nine thousand, eight hundred three".
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