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289974849 = 3273135393
BaseRepresentation
bin10001010010001…
…010101001000001
3202012122020201020
4101102022221001
51043213143344
644435100053
710120513503
oct2122125101
9665566636
10289974849
1113975743a
1281141629
13480ca968
142a723d73
151a6cd719
hex1148aa41

289974849 has 8 divisors (see below), whose sum is σ = 386785632. Its totient is φ = 193240320.

The previous prime is 289974833. The next prime is 289974877. The reversal of 289974849 is 948479982.

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

It is not a de Polignac number, because 289974849 - 24 = 289974833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 289974792 and 289974801.

It is not an unprimeable number, because it can be changed into a prime (289974829) 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, 9504 + ... + 25889.

It is an arithmetic number, because the mean of its divisors is an integer number (48348204).

Almost surely, 2289974849 is an apocalyptic number.

It is an amenable number.

289974849 is a deficient number, since it is larger than the sum of its proper divisors (96810783).

289974849 is a wasteful number, since it uses less digits than its factorization.

289974849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38127.

The product of its digits is 10450944, while the sum is 60.

The square root of 289974849 is about 17028.6478911275. The cubic root of 289974849 is about 661.8914589467.

The spelling of 289974849 in words is "two hundred eighty-nine million, nine hundred seventy-four thousand, eight hundred forty-nine".

Divisors: 1 3 2731 8193 35393 106179 96658283 289974849