| Base | Representation |
|---|---|
| bin | 1000111001001… |
| … | …11001001000100 |
| 3 | 12012101112121110 |
| 4 | 10130213021010 |
| 5 | 123044443340 |
| 6 | 11223045020 |
| 7 | 1564111410 |
| oct | 434471104 |
| 9 | 165345543 |
| 10 | 74609220 |
| 11 | 3912a014 |
| 12 | 20ba0770 |
| 13 | 125c378a |
| 14 | 9ca1d40 |
| 15 | 683b680 |
| hex | 4727244 |
74609220 has 96 divisors (see below), whose sum is σ = 239904000. Its totient is φ = 16971264.
The previous prime is 74609207. The next prime is 74609221. The reversal of 74609220 is 2290647.
It is a happy number.
74609220 is a nontrivial binomial coefficient, being equal to C(12216, 2).
It is a Harshad number since it is a multiple of its sum of digits (30).
It is not an unprimeable number, because it can be changed into a prime (74609221) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 146326 + ... + 146834.
It is an arithmetic number, because the mean of its divisors is an integer number (2499000).
Almost surely, 274609220 is an apocalyptic number.
74609220 is a gapful number since it is divisible by the number (70) formed by its first and last digit.
74609220 is the 12215-th triangular number and also the 6108-th hexagonal number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 74609220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119952000).
74609220 is an abundant number, since it is smaller than the sum of its proper divisors (165294780).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
74609220 is a wasteful number, since it uses less digits than its factorization.
74609220 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 877 (or 875 counting only the distinct ones).
The product of its (nonzero) digits is 6048, while the sum is 30.
The square root of 74609220 is about 8637.6628783485. The cubic root of 74609220 is about 420.9826199327.
Adding to 74609220 its reverse (2290647), we get a palindrome (76899867).
The spelling of 74609220 in words is "seventy-four million, six hundred nine thousand, two hundred twenty".
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