Base | Representation |
---|---|
bin | 1011010111110001111101 |
3 | 12121110011000 |
4 | 23113301331 |
5 | 1230342424 |
6 | 143520513 |
7 | 34223634 |
oct | 13276175 |
9 | 5543130 |
10 | 2980989 |
11 | 1756730 |
12 | bb9139 |
13 | 804acb |
14 | 57851b |
15 | 3dd3c9 |
hex | 2d7c7d |
2980989 has 16 divisors (see below), whose sum is σ = 4818240. Its totient is φ = 1806480.
The previous prime is 2980981. The next prime is 2980993. The reversal of 2980989 is 9890892.
It is not a de Polignac number, because 2980989 - 23 = 2980981 is a prime.
It is a Curzon number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2980981) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4722 + ... + 5315.
It is an arithmetic number, because the mean of its divisors is an integer number (301140).
22980989 is an apocalyptic number.
It is an amenable number.
2980989 is a deficient number, since it is larger than the sum of its proper divisors (1837251).
2980989 is a wasteful number, since it uses less digits than its factorization.
2980989 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 10057 (or 10051 counting only the distinct ones).
The product of its (nonzero) digits is 93312, while the sum is 45.
The square root of 2980989 is about 1726.5540825587. The cubic root of 2980989 is about 143.9196600465.
Subtracting 2980989 from its reverse (9890892), we obtain a triangular number (6909903 = T3717).
It can be divided in two parts, 2980 and 989, that added together give a square (3969 = 632).
The spelling of 2980989 in words is "two million, nine hundred eighty thousand, nine hundred eighty-nine".
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