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2989481 = 11271771
BaseRepresentation
bin1011011001110110101001
312121212210112
423121312221
51231130411
6144024105
734260455
oct13316651
95555715
102989481
111762050
121002035
13808931
1457b665
153e0b8b
hex2d9da9

2989481 has 4 divisors (see below), whose sum is σ = 3261264. Its totient is φ = 2717700.

The previous prime is 2989451. The next prime is 2989487. The reversal of 2989481 is 1849892.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2989481 - 26 = 2989417 is a prime.

It is a super-2 number, since 2×29894812 = 17873993298722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2989487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135875 + ... + 135896.

It is an arithmetic number, because the mean of its divisors is an integer number (815316).

22989481 is an apocalyptic number.

It is an amenable number.

2989481 is a deficient number, since it is larger than the sum of its proper divisors (271783).

2989481 is a wasteful number, since it uses less digits than its factorization.

2989481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271782.

The product of its digits is 41472, while the sum is 41.

The square root of 2989481 is about 1729.0115673413. The cubic root of 2989481 is about 144.0561927040.

It can be divided in two parts, 298 and 9481, that added together give a palindrome (9779).

The spelling of 2989481 in words is "two million, nine hundred eighty-nine thousand, four hundred eighty-one".

Divisors: 1 11 271771 2989481