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49304281 = 133792637
BaseRepresentation
bin1011110000010…
…1001011011001
310102202220202111
42330011023121
5100110214111
64520432321
71136036155
oct274051331
9112686674
1049304281
1125916044
12146186a1
13a2a3840
146796065
1544dda21
hex2f052d9

49304281 has 4 divisors (see below), whose sum is σ = 53096932. Its totient is φ = 45511632.

The previous prime is 49304279. The next prime is 49304293. The reversal of 49304281 is 18240394.

49304281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18240394 = 29120197.

It can be written as a sum of positive squares in 2 ways, for example, as 9865881 + 39438400 = 3141^2 + 6280^2 .

It is a cyclic number.

It is not a de Polignac number, because 49304281 - 21 = 49304279 is a prime.

It is a super-2 number, since 2×493042812 = 4861824249853922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49304251) 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, 1896306 + ... + 1896331.

It is an arithmetic number, because the mean of its divisors is an integer number (13274233).

Almost surely, 249304281 is an apocalyptic number.

It is an amenable number.

49304281 is a deficient number, since it is larger than the sum of its proper divisors (3792651).

49304281 is a wasteful number, since it uses less digits than its factorization.

49304281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3792650.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 49304281 is about 7021.7007199111. The cubic root of 49304281 is about 366.6864623840.

The spelling of 49304281 in words is "forty-nine million, three hundred four thousand, two hundred eighty-one".

Divisors: 1 13 3792637 49304281