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284430130 = 2528443013
BaseRepresentation
bin10000111101000…
…000111100110010
3201211012112210021
4100331000330302
51040303231010
644120154054
710022421235
oct2075007462
9654175707
10284430130
1113660a626
127b30892a
1346c08c6a
1429abd41c
1519e858da
hex10f40f32

284430130 has 8 divisors (see below), whose sum is σ = 511974252. Its totient is φ = 113772048.

The previous prime is 284430101. The next prime is 284430131. The reversal of 284430130 is 31034482.

It can be written as a sum of positive squares in 2 ways, for example, as 248346081 + 36084049 = 15759^2 + 6007^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 284430095 and 284430104.

It is not an unprimeable number, because it can be changed into a prime (284430131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14221497 + ... + 14221516.

Almost surely, 2284430130 is an apocalyptic number.

284430130 is a deficient number, since it is larger than the sum of its proper divisors (227544122).

284430130 is a wasteful number, since it uses less digits than its factorization.

284430130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28443020.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 284430130 is about 16865.0564778183. The cubic root of 284430130 is about 657.6455209523.

The spelling of 284430130 in words is "two hundred eighty-four million, four hundred thirty thousand, one hundred thirty".

Divisors: 1 2 5 10 28443013 56886026 142215065 284430130