Base | Representation |
---|---|
bin | 1111001000000… |
… | …10011110000000 |
3 | 22211202120100110 |
4 | 13210002132000 |
5 | 224440402213 |
6 | 20331351320 |
7 | 3100346205 |
oct | 744023600 |
9 | 284676313 |
10 | 126887808 |
11 | 65696763 |
12 | 365b2540 |
13 | 20399058 |
14 | 12bcdcac |
15 | b2165c3 |
hex | 7902780 |
126887808 has 64 divisors (see below), whose sum is σ = 342634320. Its totient is φ = 41594880.
The previous prime is 126887807. The next prime is 126887879. The reversal of 126887808 is 808788621.
It is a tau number, because it is divible by the number of its divisors (64).
It is a super-2 number, since 2×1268878082 = 32201031638089728, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (48).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (126887801) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20716 + ... + 26132.
Almost surely, 2126887808 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 126887808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171317160).
126887808 is an abundant number, since it is smaller than the sum of its proper divisors (215746512).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
126887808 is an equidigital number, since it uses as much as digits as its factorization.
126887808 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5495 (or 5483 counting only the distinct ones).
The product of its (nonzero) digits is 344064, while the sum is 48.
The square root of 126887808 is about 11264.4488546932. The cubic root of 126887808 is about 502.5045112340.
The spelling of 126887808 in words is "one hundred twenty-six million, eight hundred eighty-seven thousand, eight hundred eight".
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