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248741389 = 1323831911
BaseRepresentation
bin11101101001101…
…11111000001101
3122100001101001001
432310313320031
51002134211024
640403220301
76110160361
oct1664677015
9570041031
10248741389
111184540a6
126b377691
133c6c1870
142506d2a1
1516c86244
hexed37e0d

248741389 has 8 divisors (see below), whose sum is σ = 279522432. Its totient is φ = 219624240.

The previous prime is 248741377. The next prime is 248741393. The reversal of 248741389 is 983147842.

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

It is not a de Polignac number, because 248741389 - 217 = 248610317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (246741389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 415657 + ... + 416254.

It is an arithmetic number, because the mean of its divisors is an integer number (34940304).

Almost surely, 2248741389 is an apocalyptic number.

It is an amenable number.

248741389 is a deficient number, since it is larger than the sum of its proper divisors (30781043).

248741389 is a wasteful number, since it uses less digits than its factorization.

248741389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831947.

The product of its digits is 387072, while the sum is 46.

The square root of 248741389 is about 15771.5373061728. The cubic root of 248741389 is about 628.9015788911.

The spelling of 248741389 in words is "two hundred forty-eight million, seven hundred forty-one thousand, three hundred eighty-nine".

Divisors: 1 13 23 299 831911 10814843 19133953 248741389