Base | Representation |
---|---|
bin | 1010111111011101100100 |
3 | 12102101111210 |
4 | 22333131210 |
5 | 1214201010 |
6 | 141431420 |
7 | 33330345 |
oct | 12773544 |
9 | 5371453 |
10 | 2881380 |
11 | 1698907 |
12 | b6b570 |
13 | 79b678 |
14 | 5500cc |
15 | 3bdb20 |
hex | 2bf764 |
2881380 has 24 divisors (see below), whose sum is σ = 8068032. Its totient is φ = 768352.
The previous prime is 2881379. The next prime is 2881391. The reversal of 2881380 is 831882.
It is a Harshad number since it is a multiple of its sum of digits (30).
It is a zygodrome in base 14.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23952 + ... + 24071.
It is an arithmetic number, because the mean of its divisors is an integer number (336168).
22881380 is an apocalyptic number.
2881380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
2881380 is an abundant number, since it is smaller than the sum of its proper divisors (5186652).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2881380 is a wasteful number, since it uses less digits than its factorization.
2881380 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 48035 (or 48033 counting only the distinct ones).
The product of its (nonzero) digits is 3072, while the sum is 30.
The square root of 2881380 is about 1697.4628125529. The cubic root of 2881380 is about 142.2984531471.
The spelling of 2881380 in words is "two million, eight hundred eighty-one thousand, three hundred eighty".
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