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248842249 = 1911302839
BaseRepresentation
bin11101101010100…
…00100000001001
3122100020111101121
432311100200021
51002200422444
640405315241
76111060415
oct1665204011
9570214347
10248842249
11118512957
126b405b21
133c728746
1425097d45
1516ca6084
hexed50809

248842249 has 4 divisors (see below), whose sum is σ = 250145280. Its totient is φ = 247539220.

The previous prime is 248842207. The next prime is 248842271. The reversal of 248842249 is 942248842.

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 248842249 - 29 = 248841737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (248842289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 651229 + ... + 651610.

It is an arithmetic number, because the mean of its divisors is an integer number (62536320).

Almost surely, 2248842249 is an apocalyptic number.

It is an amenable number.

248842249 is a deficient number, since it is larger than the sum of its proper divisors (1303031).

248842249 is a wasteful number, since it uses less digits than its factorization.

248842249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303030.

The product of its digits is 294912, while the sum is 43.

The square root of 248842249 is about 15774.7345144063. The cubic root of 248842249 is about 628.9865700299.

The spelling of 248842249 in words is "two hundred forty-eight million, eight hundred forty-two thousand, two hundred forty-nine".

Divisors: 1 191 1302839 248842249