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205230656 = 2623139423
BaseRepresentation
bin11000011101110…
…01001001000000
3112022011210112102
430032321021000
5410014340111
632210445532
75041301051
oct1416711100
9468153472
10205230656
11a5935914
12588938a8
1333699077
141d384728
151303e13b
hexc3b9240

205230656 has 28 divisors (see below), whose sum is σ = 424964352. Its totient is φ = 98153088.

The previous prime is 205230653. The next prime is 205230659. The reversal of 205230656 is 656032502.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (205230653) and next prime (205230659).

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (205230653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68240 + ... + 71183.

Almost surely, 2205230656 is an apocalyptic number.

It is an amenable number.

205230656 is an abundant number, since it is smaller than the sum of its proper divisors (219733696).

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

205230656 is a wasteful number, since it uses less digits than its factorization.

205230656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139458 (or 139448 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 205230656 is about 14325.8736557321. The cubic root of 205230656 is about 589.8579146506.

The spelling of 205230656 in words is "two hundred five million, two hundred thirty thousand, six hundred fifty-six".

Divisors: 1 2 4 8 16 23 32 46 64 92 184 368 736 1472 139423 278846 557692 1115384 2230768 3206729 4461536 6413458 8923072 12826916 25653832 51307664 102615328 205230656