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230405244 = 22319200437
BaseRepresentation
bin11011011101110…
…11010001111100
3121001112210120120
431232323101330
5432440431434
634510214540
75465261256
oct1556732174
9531483516
10230405244
1110906a963
12651b4450
1338971884
1422858cd6
1515363349
hexdbbb47c

230405244 has 12 divisors (see below), whose sum is σ = 537612264. Its totient is φ = 76801744.

The previous prime is 230405209. The next prime is 230405293. The reversal of 230405244 is 442504032.

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

It is a congruent number.

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, 9600207 + ... + 9600230.

It is an arithmetic number, because the mean of its divisors is an integer number (44801022).

Almost surely, 2230405244 is an apocalyptic number.

It is an amenable number.

230405244 is an abundant number, since it is smaller than the sum of its proper divisors (307207020).

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

230405244 is a wasteful number, since it uses less digits than its factorization.

230405244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19200444 (or 19200442 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 230405244 is about 15179.1055072425. The cubic root of 230405244 is about 613.0521969521.

Adding to 230405244 its reverse (442504032), we get a palindrome (672909276).

The spelling of 230405244 in words is "two hundred thirty million, four hundred five thousand, two hundred forty-four".

Divisors: 1 2 3 4 6 12 19200437 38400874 57601311 76801748 115202622 230405244