Base | Representation |
---|---|
bin | 1011011001100010010100 |
3 | 12121211000100 |
4 | 23121202110 |
5 | 1231110210 |
6 | 144014100 |
7 | 34253616 |
oct | 13314224 |
9 | 5554010 |
10 | 2988180 |
11 | 1761078 |
12 | 1001330 |
13 | 808170 |
14 | 57adb6 |
15 | 3e05c0 |
hex | 2d9894 |
2988180 has 72 divisors (see below), whose sum is σ = 9769032. Its totient is φ = 734976.
The previous prime is 2988169. The next prime is 2988191. The reversal of 2988180 is 818892.
It is an interprime number because it is at equal distance from previous prime (2988169) and next prime (2988191).
It can be written as a sum of positive squares in 4 ways, for example, as 125316 + 2862864 = 354^2 + 1692^2 .
It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1702 + ... + 2978.
It is an arithmetic number, because the mean of its divisors is an integer number (135681).
22988180 is an apocalyptic number.
2988180 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 2988180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4884516).
2988180 is an abundant number, since it is smaller than the sum of its proper divisors (6780852).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2988180 is a wasteful number, since it uses less digits than its factorization.
2988180 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1305 (or 1300 counting only the distinct ones).
The product of its (nonzero) digits is 9216, while the sum is 36.
The square root of 2988180 is about 1728.6352998825. The cubic root of 2988180 is about 144.0352922756.
It can be divided in two parts, 29 and 88180, that added together give a square (88209 = 2972).
The spelling of 2988180 in words is "two million, nine hundred eighty-eight thousand, one hundred eighty".
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