Base | Representation |
---|---|
bin | 110111000011… |
… | …0100110100000 |
3 | 2000022101102120 |
4 | 1232012212200 |
5 | 24342103010 |
6 | 2510344240 |
7 | 500221224 |
oct | 156064640 |
9 | 60271376 |
10 | 28862880 |
11 | 15324122 |
12 | 97bb080 |
13 | 5c97537 |
14 | 3b94784 |
15 | 2801e70 |
hex | 1b869a0 |
28862880 has 96 divisors (see below), whose sum is σ = 91736064. Its totient is φ = 7627776.
The previous prime is 28862857. The next prime is 28862927. The reversal of 28862880 is 8826882.
It is a tau number, because it is divible by the number of its divisors (96).
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75169 + ... + 75551.
It is an arithmetic number, because the mean of its divisors is an integer number (955584).
Almost surely, 228862880 is an apocalyptic number.
28862880 is a gapful number since it is divisible by the number (20) 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 28862880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45868032).
28862880 is an abundant number, since it is smaller than the sum of its proper divisors (62873184).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
28862880 is a wasteful number, since it uses less digits than its factorization.
28862880 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 558 (or 550 counting only the distinct ones).
The product of its (nonzero) digits is 98304, while the sum is 42.
The square root of 28862880 is about 5372.4184498231. The cubic root of 28862880 is about 306.7466919908.
The spelling of 28862880 in words is "twenty-eight million, eight hundred sixty-two thousand, eight hundred eighty".
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