Base | Representation |
---|---|
bin | 1111001111110… |
… | …0001010011101 |
3 | 11110022212101000 |
4 | 3303330022131 |
5 | 112332304141 |
6 | 10202340513 |
7 | 1404354426 |
oct | 363741235 |
9 | 143285330 |
10 | 63947421 |
11 | 3310770a |
12 | 194ba739 |
13 | 1032c915 |
14 | 86c864d |
15 | 59325b6 |
hex | 3cfc29d |
63947421 has 32 divisors (see below), whose sum is σ = 101191680. Its totient is φ = 39771648.
The previous prime is 63947417. The next prime is 63947423. The reversal of 63947421 is 12474936.
It is not a de Polignac number, because 63947421 - 22 = 63947417 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (63947423) 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, 57745 + ... + 58841.
It is an arithmetic number, because the mean of its divisors is an integer number (3162240).
Almost surely, 263947421 is an apocalyptic number.
It is an amenable number.
63947421 is a deficient number, since it is larger than the sum of its proper divisors (37244259).
63947421 is a wasteful number, since it uses less digits than its factorization.
63947421 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1250 (or 1244 counting only the distinct ones).
The product of its digits is 36288, while the sum is 36.
The square root of 63947421 is about 7996.7131372833. The cubic root of 63947421 is about 399.8904304057.
The spelling of 63947421 in words is "sixty-three million, nine hundred forty-seven thousand, four hundred twenty-one".
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