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284130997 = 1952128703
BaseRepresentation
bin10000111011110…
…111111010110101
3201210122100110021
4100323313322311
51040214142442
644105525141
710020034153
oct2073677265
9653570407
10284130997
11136425907
127b1a37b1
1346b32a67
1429a423d3
1519e26e67
hex10ef7eb5

284130997 has 8 divisors (see below), whose sum is σ = 299669760. Its totient is φ = 268650720.

The previous prime is 284130991. The next prime is 284131019. The reversal of 284130997 is 799031482.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-284130997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284130991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4453 + ... + 24250.

It is an arithmetic number, because the mean of its divisors is an integer number (37458720).

Almost surely, 2284130997 is an apocalyptic number.

It is an amenable number.

284130997 is a deficient number, since it is larger than the sum of its proper divisors (15538763).

284130997 is a wasteful number, since it uses less digits than its factorization.

284130997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29243.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 284130997 is about 16856.1857191952. The cubic root of 284130997 is about 657.4148931561.

The spelling of 284130997 in words is "two hundred eighty-four million, one hundred thirty thousand, nine hundred ninety-seven".

Divisors: 1 19 521 9899 28703 545357 14954263 284130997