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2989145 = 54313903
BaseRepresentation
bin1011011001110001011001
312121212100002
423121301121
51231123040
6144022345
734256465
oct13316131
95555302
102989145
111761875
1210019b5
13808733
1457b4a5
153e0a15
hex2d9c59

2989145 has 8 divisors (see below), whose sum is σ = 3670656. Its totient is φ = 2335536.

The previous prime is 2989141. The next prime is 2989169. The reversal of 2989145 is 5419892.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2989145 - 22 = 2989141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2989099 and 2989108.

It is not an unprimeable number, because it can be changed into a prime (2989141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6737 + ... + 7166.

It is an arithmetic number, because the mean of its divisors is an integer number (458832).

22989145 is an apocalyptic number.

It is an amenable number.

2989145 is a deficient number, since it is larger than the sum of its proper divisors (681511).

2989145 is a wasteful number, since it uses less digits than its factorization.

2989145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13951.

The product of its digits is 25920, while the sum is 38.

The square root of 2989145 is about 1728.9143992691. The cubic root of 2989145 is about 144.0507954802.

The spelling of 2989145 in words is "two million, nine hundred eighty-nine thousand, one hundred forty-five".

Divisors: 1 5 43 215 13903 69515 597829 2989145