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250505343 = 32112530357
BaseRepresentation
bin11101110111001…
…10100001111111
3122110100222201200
432323212201333
51003112132333
640505110543
76131155164
oct1673464177
9573328650
10250505343
11119449410
126ba88453
133cb8b71a
14253ac06b
1516ed3c13
hexeee687f

250505343 has 12 divisors (see below), whose sum is σ = 394735848. Its totient is φ = 151821360.

The previous prime is 250505317. The next prime is 250505399. The reversal of 250505343 is 343505052.

It is not a de Polignac number, because 250505343 - 212 = 250501247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250505303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1265080 + ... + 1265277.

It is an arithmetic number, because the mean of its divisors is an integer number (32894654).

Almost surely, 2250505343 is an apocalyptic number.

250505343 is a deficient number, since it is larger than the sum of its proper divisors (144230505).

250505343 is a wasteful number, since it uses less digits than its factorization.

250505343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2530374 (or 2530371 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 250505343 is about 15827.3605822323. The cubic root of 250505343 is about 630.3847007920.

The spelling of 250505343 in words is "two hundred fifty million, five hundred five thousand, three hundred forty-three".

Divisors: 1 3 9 11 33 99 2530357 7591071 22773213 27833927 83501781 250505343