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245008289 = 1938631471
BaseRepresentation
bin11101001101010…
…00011110100001
3122002000201012002
432212220132201
51000210231124
640151213345
76033351611
oct1646503641
9562021162
10245008289
11116334399
126a077255
133b9b5626
142477aa41
151679a0ae
hexe9a87a1

245008289 has 8 divisors (see below), whose sum is σ = 246730752. Its totient is φ = 243290880.

The previous prime is 245008271. The next prime is 245008307. The reversal of 245008289 is 982800542.

245008289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (245008271) and next prime (245008307).

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 245008289 - 28 = 245008033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245008229) 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, 165824 + ... + 167294.

It is an arithmetic number, because the mean of its divisors is an integer number (30841344).

Almost surely, 2245008289 is an apocalyptic number.

It is an amenable number.

245008289 is a deficient number, since it is larger than the sum of its proper divisors (1722463).

245008289 is a wasteful number, since it uses less digits than its factorization.

245008289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2527.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 245008289 is about 15652.7406226514. The cubic root of 245008289 is about 625.7395312179.

The spelling of 245008289 in words is "two hundred forty-five million, eight thousand, two hundred eighty-nine".

Divisors: 1 193 863 1471 166559 283903 1269473 245008289