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230656812 = 22361731153
BaseRepresentation
bin11011011111110…
…00101100101100
3121002000120122220
431233320230230
5433022004222
634515435340
75500356561
oct1557705454
9532016586
10230656812
11109221971
12652b5b50
1338a2c229
14228c2868
15153b2b5c
hexdbf8b2c

230656812 has 24 divisors (see below), whose sum is σ = 539088816. Its totient is φ = 76758528.

The previous prime is 230656801. The next prime is 230656819. The reversal of 230656812 is 218656032.

It is not an unprimeable number, because it can be changed into a prime (230656819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8173 + ... + 22980.

It is an arithmetic number, because the mean of its divisors is an integer number (22462034).

Almost surely, 2230656812 is an apocalyptic number.

It is an amenable number.

230656812 is an abundant number, since it is smaller than the sum of its proper divisors (308432004).

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

230656812 is a wasteful number, since it uses less digits than its factorization.

230656812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31777 (or 31775 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 230656812 is about 15187.3899008355. The cubic root of 230656812 is about 613.2752361742.

The spelling of 230656812 in words is "two hundred thirty million, six hundred fifty-six thousand, eight hundred twelve".

Divisors: 1 2 3 4 6 12 617 1234 1851 2468 3702 7404 31153 62306 93459 124612 186918 373836 19221401 38442802 57664203 76885604 115328406 230656812