Base | Representation |
---|---|
bin | 1000001110001… |
… | …10010100010100 |
3 | 11210210000201010 |
4 | 10013012110110 |
5 | 120124012443 |
6 | 10502132220 |
7 | 1465142661 |
oct | 407062424 |
9 | 153700633 |
10 | 68969748 |
11 | 35a27aa1 |
12 | 1b121070 |
13 | 1139a903 |
14 | 9234a68 |
15 | 60c5733 |
hex | 41c6514 |
68969748 has 48 divisors (see below), whose sum is σ = 173638080. Its totient is φ = 21225984.
The previous prime is 68969741. The next prime is 68969767. The reversal of 68969748 is 84796986.
It is a super-2 number, since 2×689697482 = 9513652278367008, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68969741) 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, 7623 + ... + 14001.
It is an arithmetic number, because the mean of its divisors is an integer number (3617460).
Almost surely, 268969748 is an apocalyptic number.
68969748 is a gapful number since it is divisible by the number (68) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 68969748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86819040).
68969748 is an abundant number, since it is smaller than the sum of its proper divisors (104668332).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68969748 is a wasteful number, since it uses less digits than its factorization.
68969748 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6456 (or 6454 counting only the distinct ones).
The product of its digits is 5225472, while the sum is 57.
The square root of 68969748 is about 8304.8027068679. The cubic root of 68969748 is about 410.0966419023.
The spelling of 68969748 in words is "sixty-eight million, nine hundred sixty-nine thousand, seven hundred forty-eight".
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