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508248289 = 2631932503
BaseRepresentation
bin11110010010110…
…100000011100001
31022102100200120201
4132102310003201
52020102421124
6122233305201
715411016303
oct3622640341
91272320521
10508248289
1124099050a
12122265201
13813b2543
144b701973
152e947144
hex1e4b40e1

508248289 has 4 divisors (see below), whose sum is σ = 510181056. Its totient is φ = 506315524.

The previous prime is 508248253. The next prime is 508248313. The reversal of 508248289 is 982842805.

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 508248289 - 27 = 508248161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (508248239) 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, 965989 + ... + 966514.

It is an arithmetic number, because the mean of its divisors is an integer number (127545264).

Almost surely, 2508248289 is an apocalyptic number.

It is an amenable number.

508248289 is a deficient number, since it is larger than the sum of its proper divisors (1932767).

508248289 is a wasteful number, since it uses less digits than its factorization.

508248289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1932766.

The product of its (nonzero) digits is 368640, while the sum is 46.

The square root of 508248289 is about 22544.3626878207. The cubic root of 508248289 is about 798.0411916057.

The spelling of 508248289 in words is "five hundred eight million, two hundred forty-eight thousand, two hundred eighty-nine".

Divisors: 1 263 1932503 508248289