Base | Representation |
---|---|
bin | 111001110001… |
… | …010101000000 |
3 | 1001111102000101 |
4 | 321301111000 |
5 | 12334104011 |
6 | 1300332144 |
7 | 242503231 |
oct | 71612500 |
9 | 31442011 |
10 | 15144256 |
11 | 8604116 |
12 | 50a4054 |
13 | 31a31ca |
14 | 2023088 |
15 | 14e22c1 |
hex | e71540 |
15144256 has 28 divisors (see below), whose sum is σ = 30756352. Its totient is φ = 7394688.
The previous prime is 15144251. The next prime is 15144257. The reversal of 15144256 is 65244151.
15144256 is a nontrivial binomial coefficient, being equal to C(5504, 2).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (15144251) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1 + ... + 5503.
Almost surely, 215144256 is an apocalyptic number.
15144256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.
15144256 is the 5503-rd triangular number and also the 2752-nd hexagonal number.
15144256 is the 1835-th centered nonagonal number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 15144256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15378176).
15144256 is an abundant number, since it is smaller than the sum of its proper divisors (15612096).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
15144256 is an equidigital number, since it uses as much as digits as its factorization.
15144256 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5558 (or 5548 counting only the distinct ones).
The product of its digits is 4800, while the sum is 28.
The square root of 15144256 is about 3891.5621541998. The cubic root of 15144256 is about 247.4092773637.
It can be divided in two parts, 15144 and 256, that added together give a triangular number (15400 = T175).
The spelling of 15144256 in words is "fifteen million, one hundred forty-four thousand, two hundred fifty-six".
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