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240028841 = 133109253
BaseRepresentation
bin11100100111010…
…00110010101001
3121201122201200002
432103220302221
5442421410331
635452352345
75643132353
oct1623506251
9551581602
10240028841
11113543248
12684756b5
133a961000
1423c420d3
15161149cb
hexe4e8ca9

240028841 has 8 divisors (see below), whose sum is σ = 260024520. Its totient is φ = 221563056.

The previous prime is 240028829. The next prime is 240028849. The reversal of 240028841 is 148820042.

240028841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 85747600 + 154281241 = 9260^2 + 12421^2 .

It is not a de Polignac number, because 240028841 - 214 = 240012457 is a prime.

It is a super-2 number, since 2×2400288412 = 115227689023606562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240028849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52430 + ... + 56823.

It is an arithmetic number, because the mean of its divisors is an integer number (32503065).

Almost surely, 2240028841 is an apocalyptic number.

It is an amenable number.

240028841 is a deficient number, since it is larger than the sum of its proper divisors (19995679).

240028841 is an equidigital number, since it uses as much as digits as its factorization.

240028841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109292 (or 109266 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 29.

The square root of 240028841 is about 15492.8641961388. The cubic root of 240028841 is about 621.4713934417.

Adding to 240028841 its reverse (148820042), we get a palindrome (388848883).

The spelling of 240028841 in words is "two hundred forty million, twenty-eight thousand, eight hundred forty-one".

Divisors: 1 13 169 2197 109253 1420289 18463757 240028841