| Base | Representation |
|---|---|
| bin | 1111100110011… |
| … | …0001000111000 |
| 3 | 11120010012012000 |
| 4 | 3321212020320 |
| 5 | 113222230242 |
| 6 | 10254221000 |
| 7 | 1423101141 |
| oct | 371461070 |
| 9 | 146105160 |
| 10 | 65430072 |
| 11 | 33a2a644 |
| 12 | 19ab4760 |
| 13 | 1072b726 |
| 14 | 8992ac8 |
| 15 | 5b26a4c |
| hex | 3e66238 |
65430072 has 128 divisors (see below), whose sum is σ = 194400000. Its totient is φ = 20331648.
The previous prime is 65430067. The next prime is 65430077. The reversal of 65430072 is 27003456.
It is a happy number.
65430072 is a `hidden beast` number, since 654 + 3 + 0 + 0 + 7 + 2 = 666.
65430072 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is an interprime number because it is at equal distance from previous prime (65430067) and next prime (65430077).
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (65430077) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 439054 + ... + 439202.
It is an arithmetic number, because the mean of its divisors is an integer number (1518750).
Almost surely, 265430072 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 65430072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97200000).
65430072 is an abundant number, since it is smaller than the sum of its proper divisors (128969928).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
65430072 is a wasteful number, since it uses less digits than its factorization.
65430072 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 290 (or 280 counting only the distinct ones).
The product of its (nonzero) digits is 5040, while the sum is 27.
The square root of 65430072 is about 8088.8857081801. The cubic root of 65430072 is about 402.9573972825.
The spelling of 65430072 in words is "sixty-five million, four hundred thirty thousand, seventy-two".
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