Base | Representation |
---|---|
bin | 111001110010… |
… | …010111111100 |
3 | 1001111121220001 |
4 | 321302113330 |
5 | 12334223130 |
6 | 1300404044 |
7 | 242521561 |
oct | 71622774 |
9 | 31447801 |
10 | 15148540 |
11 | 8607360 |
12 | 50a6624 |
13 | 31a5144 |
14 | 2024868 |
15 | 14e36ca |
hex | e725fc |
15148540 has 48 divisors (see below), whose sum is σ = 35661024. Its totient is φ = 5356800.
The previous prime is 15148517. The next prime is 15148543. The reversal of 15148540 is 4584151.
It is a junction number, because it is equal to n+sod(n) for n = 15148499 and 15148508.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (15148543) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7210 + ... + 9070.
It is an arithmetic number, because the mean of its divisors is an integer number (742938).
Almost surely, 215148540 is an apocalyptic number.
15148540 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 15148540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17830512).
15148540 is an abundant number, since it is smaller than the sum of its proper divisors (20512484).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
15148540 is a wasteful number, since it uses less digits than its factorization.
15148540 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1918 (or 1916 counting only the distinct ones).
The product of its (nonzero) digits is 3200, while the sum is 28.
The square root of 15148540 is about 3892.1125369136. The cubic root of 15148540 is about 247.4326041709.
It can be divided in two parts, 151485 and 40, that added together give a triangular number (151525 = T550).
The spelling of 15148540 in words is "fifteen million, one hundred forty-eight thousand, five hundred forty".
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