Base | Representation |
---|---|
bin | 110110111010… |
… | …1010110000000 |
3 | 2000011210110111 |
4 | 1231311112000 |
5 | 24332322232 |
6 | 2505041104 |
7 | 466505152 |
oct | 155652600 |
9 | 60153414 |
10 | 28792192 |
11 | 15286000 |
12 | 9786194 |
13 | 5c71300 |
14 | 3b76ad2 |
15 | 27db047 |
hex | 1b75580 |
28792192 has 96 divisors (see below), whose sum is σ = 68317560. Its totient is φ = 12080640.
The previous prime is 28792189. The next prime is 28792207. The reversal of 28792192 is 29129782.
It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2214778 + ... + 2214790.
Almost surely, 228792192 is an apocalyptic number.
28792192 is a gapful number since it is divisible by the number (22) 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 28792192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34158780).
28792192 is an abundant number, since it is smaller than the sum of its proper divisors (39525368).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
28792192 is an equidigital number, since it uses as much as digits as its factorization.
28792192 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 73 (or 26 counting only the distinct ones).
The product of its digits is 36288, while the sum is 40.
The square root of 28792192 is about 5365.8356292380. The cubic root of 28792192 is about 306.4960697868.
The spelling of 28792192 in words is "twenty-eight million, seven hundred ninety-two thousand, one hundred ninety-two".
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