Base | Representation |
---|---|
bin | 111010101011… |
… | …001001011000 |
3 | 1001221102212122 |
4 | 322223021120 |
5 | 12414143310 |
6 | 1305400412 |
7 | 244510541 |
oct | 72531130 |
9 | 31842778 |
10 | 15381080 |
11 | 8756040 |
12 | 5199108 |
13 | 3256c40 |
14 | 20854c8 |
15 | 153c555 |
hex | eab258 |
15381080 has 64 divisors (see below), whose sum is σ = 40672800. Its totient is φ = 5160960.
The previous prime is 15381061. The next prime is 15381101. The reversal of 15381080 is 8018351.
15381080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a Harshad number since it is a multiple of its sum of digits (26).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4376 + ... + 7064.
Almost surely, 215381080 is an apocalyptic number.
15381080 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 15381080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20336400).
15381080 is an abundant number, since it is smaller than the sum of its proper divisors (25291720).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
15381080 is a wasteful number, since it uses less digits than its factorization.
15381080 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2724 (or 2720 counting only the distinct ones).
The product of its (nonzero) digits is 960, while the sum is 26.
The square root of 15381080 is about 3921.8720019909. The cubic root of 15381080 is about 248.6922645733.
The spelling of 15381080 in words is "fifteen million, three hundred eighty-one thousand, eighty".
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