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245144244 = 22320428687
BaseRepresentation
bin11101001110010…
…01101010110100
3122002021121200110
432213021222310
51000224103434
640154143020
76034456152
oct1647115264
9562247613
10245144244
11116417554
126a121a70
133ba32487
14247b43d2
15167c54e9
hexe9c9ab4

245144244 has 12 divisors (see below), whose sum is σ = 572003264. Its totient is φ = 81714744.

The previous prime is 245144243. The next prime is 245144257. The reversal of 245144244 is 442441542.

245144244 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245144243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10214332 + ... + 10214355.

Almost surely, 2245144244 is an apocalyptic number.

It is an amenable number.

245144244 is an abundant number, since it is smaller than the sum of its proper divisors (326859020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245144244 is a wasteful number, since it uses less digits than its factorization.

245144244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20428694 (or 20428692 counting only the distinct ones).

The product of its digits is 20480, while the sum is 30.

The square root of 245144244 is about 15657.0828700624. The cubic root of 245144244 is about 625.8552506869.

Adding to 245144244 its reverse (442441542), we get a palindrome (687585786).

The spelling of 245144244 in words is "two hundred forty-five million, one hundred forty-four thousand, two hundred forty-four".

Divisors: 1 2 3 4 6 12 20428687 40857374 61286061 81714748 122572122 245144244