Base | Representation |
---|---|
bin | 1111100101111… |
… | …00111111010000 |
3 | 100010010012110121 |
4 | 13302330333100 |
5 | 231441010040 |
6 | 20551240024 |
7 | 3145521610 |
oct | 762747720 |
9 | 303105417 |
10 | 130797520 |
11 | 67917127 |
12 | 37979014 |
13 | 211377a9 |
14 | 1352aa40 |
15 | b739c4a |
hex | 7cbcfd0 |
130797520 has 120 divisors (see below), whose sum is σ = 367369344. Its totient is φ = 42418944.
The previous prime is 130797517. The next prime is 130797523. The reversal of 130797520 is 25797031.
It is an interprime number because it is at equal distance from previous prime (130797517) and next prime (130797523).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (130797523) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 201837 + ... + 202483.
Almost surely, 2130797520 is an apocalyptic number.
130797520 is a gapful number since it is divisible by the number (10) 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 130797520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183684672).
130797520 is an abundant number, since it is smaller than the sum of its proper divisors (236571824).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
130797520 is a wasteful number, since it uses less digits than its factorization.
130797520 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 705 (or 680 counting only the distinct ones).
The product of its (nonzero) digits is 13230, while the sum is 34.
The square root of 130797520 is about 11436.6743417831. The cubic root of 130797520 is about 507.6135072537.
The spelling of 130797520 in words is "one hundred thirty million, seven hundred ninety-seven thousand, five hundred twenty".
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