Base | Representation |
---|---|
bin | 1110101001100… |
… | …0000001011101 |
3 | 11021121110222000 |
4 | 3222120001131 |
5 | 111212040333 |
6 | 10032512513 |
7 | 1344142431 |
oct | 352300135 |
9 | 137543860 |
10 | 61440093 |
11 | 31754940 |
12 | 186ab739 |
13 | c9625b0 |
14 | 82349c1 |
15 | 55d9713 |
hex | 3a9805d |
61440093 has 32 divisors (see below), whose sum is σ = 106942080. Its totient is φ = 34369920.
The previous prime is 61440089. The next prime is 61440097. The reversal of 61440093 is 39004416.
61440093 is a `hidden beast` number, since 614 + 40 + 0 + 9 + 3 = 666.
It is an interprime number because it is at equal distance from previous prime (61440089) and next prime (61440097).
It is not a de Polignac number, because 61440093 - 22 = 61440089 is a prime.
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 (61440097) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4096 + ... + 11817.
It is an arithmetic number, because the mean of its divisors is an integer number (3341940).
Almost surely, 261440093 is an apocalyptic number.
It is an amenable number.
61440093 is a deficient number, since it is larger than the sum of its proper divisors (45501987).
61440093 is a wasteful number, since it uses less digits than its factorization.
61440093 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 15946 (or 15940 counting only the distinct ones).
The product of its (nonzero) digits is 2592, while the sum is 27.
The square root of 61440093 is about 7838.3731092619. The cubic root of 61440093 is about 394.5941309880.
The spelling of 61440093 in words is "sixty-one million, four hundred forty thousand, ninety-three".
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