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245135144 = 23291056617
BaseRepresentation
bin11101001110001…
…11011100101000
3122002021011012102
432213013130220
51000223311034
640154032532
76034420502
oct1647073450
9562234172
10245135144
11116410731
126a118748
133ba2b2a7
14247b0d72
15167c297e
hexe9c7728

245135144 has 16 divisors (see below), whose sum is σ = 475478100. Its totient is φ = 118340992.

The previous prime is 245135113. The next prime is 245135161. The reversal of 245135144 is 441531542.

245135144 is digitally balanced in base 3, 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 2 ways, for example, as 216384100 + 28751044 = 14710^2 + 5362^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 528077 + ... + 528540.

Almost surely, 2245135144 is an apocalyptic number.

It is an amenable number.

245135144 is a deficient number, since it is larger than the sum of its proper divisors (230342956).

245135144 is a wasteful number, since it uses less digits than its factorization.

245135144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056652 (or 1056648 counting only the distinct ones).

The product of its digits is 9600, while the sum is 29.

The square root of 245135144 is about 15656.7922640623. The cubic root of 245135144 is about 625.8475064663.

Adding to 245135144 its reverse (441531542), we get a palindrome (686666686).

The spelling of 245135144 in words is "two hundred forty-five million, one hundred thirty-five thousand, one hundred forty-four".

Divisors: 1 2 4 8 29 58 116 232 1056617 2113234 4226468 8452936 30641893 61283786 122567572 245135144