Base | Representation |
---|---|
bin | 1011010111100010100000 |
3 | 12121101210101 |
4 | 23113202200 |
5 | 1230330000 |
6 | 143512144 |
7 | 34221022 |
oct | 13274240 |
9 | 5541711 |
10 | 2980000 |
11 | 1755a11 |
12 | bb8654 |
13 | 80451a |
14 | 578012 |
15 | 3dce6a |
hex | 2d78a0 |
2980000 has 60 divisors (see below), whose sum is σ = 7380450. Its totient is φ = 1184000.
The previous prime is 2979997. The next prime is 2980001. The reversal of 2980000 is 892.
It can be written as a sum of positive squares in 5 ways, for example, as 35344 + 2944656 = 188^2 + 1716^2 .
It is an Ulam number.
It is a nialpdrome in base 12.
It is a self number, because there is not a number n which added to its sum of digits gives 2980000.
It is not an unprimeable number, because it can be changed into a prime (2980001) by changing a digit.
It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 19926 + ... + 20074.
22980000 is an apocalyptic number.
2980000 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 2980000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3690225).
2980000 is an abundant number, since it is smaller than the sum of its proper divisors (4400450).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2980000 is an equidigital number, since it uses as much as digits as its factorization.
2980000 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 179 (or 156 counting only the distinct ones).
The product of its (nonzero) digits is 144, while the sum is 19.
The square root of 2980000 is about 1726.2676501632. The cubic root of 2980000 is about 143.9037422546.
Adding to 2980000 its reverse (892), we get a palindrome (2980892).
It can be divided in two parts, 2 and 980000, that multiplied together give a square (1960000 = 14002).
The spelling of 2980000 in words is "two million, nine hundred eighty thousand".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.067 sec. • engine limits •