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1230624284 = 221791718749
BaseRepresentation
bin100100101011001…
…1101011000011100
310011202122012011012
41021112131120130
510010014434114
6322040314352
742332063621
oct11126353034
93152565135
101230624284
1158172326a
122a41729b8
13167c57666
14b9622348
157308963e
hex4959d61c

1230624284 has 12 divisors (see below), whose sum is σ = 2165625000. Its totient is φ = 611874288.

The previous prime is 1230624257. The next prime is 1230624289. The reversal of 1230624284 is 4824260321.

It is a super-2 number, since 2×12306242842 = 3028872256741025312, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1230624284.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230624289) 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, 858659 + ... + 860090.

It is an arithmetic number, because the mean of its divisors is an integer number (180468750).

Almost surely, 21230624284 is an apocalyptic number.

It is an amenable number.

1230624284 is a deficient number, since it is larger than the sum of its proper divisors (935000716).

1230624284 is a wasteful number, since it uses less digits than its factorization.

1230624284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718932 (or 1718930 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 1230624284 is about 35080.2549021526. The cubic root of 1230624284 is about 1071.6225083114.

The spelling of 1230624284 in words is "one billion, two hundred thirty million, six hundred twenty-four thousand, two hundred eighty-four".

Divisors: 1 2 4 179 358 716 1718749 3437498 6874996 307656071 615312142 1230624284