| Base | Representation |
|---|---|
| bin | 1111010110101… |
| … | …0111011100000 |
| 3 | 11111011220201200 |
| 4 | 3311222323200 |
| 5 | 112441313440 |
| 6 | 10220201200 |
| 7 | 1411254240 |
| oct | 365527340 |
| 9 | 144156650 |
| 10 | 64401120 |
| 11 | 33397573 |
| 12 | 19699200 |
| 13 | 1045b294 |
| 14 | 87a5b20 |
| 15 | 59c1c30 |
| hex | 3d6aee0 |
64401120 has 144 divisors (see below), whose sum is σ = 251203680. Its totient is φ = 14717952.
The previous prime is 64401109. The next prime is 64401131. The reversal of 64401120 is 2110446.
64401120 is a `hidden beast` number, since 644 + 0 + 1 + 1 + 20 = 666.
It is an interprime number because it is at equal distance from previous prime (64401109) and next prime (64401131).
It is a tau number, because it is divible by the number of its divisors (144).
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 64401093 and 64401102.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6886 + ... + 13274.
It is an arithmetic number, because the mean of its divisors is an integer number (1744470).
Almost surely, 264401120 is an apocalyptic number.
64401120 is a gapful number since it is divisible by the number (60) 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 64401120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125601840).
64401120 is an abundant number, since it is smaller than the sum of its proper divisors (186802560).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
64401120 is a wasteful number, since it uses less digits than its factorization.
64401120 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6417 (or 6406 counting only the distinct ones).
The product of its (nonzero) digits is 192, while the sum is 18.
The square root of 64401120 is about 8025.0308410622. The cubic root of 64401120 is about 400.8339268734.
Adding to 64401120 its reverse (2110446), we get a palindrome (66511566).
The spelling of 64401120 in words is "sixty-four million, four hundred one thousand, one hundred twenty".
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