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2000030491 = 4347997103
BaseRepresentation
bin111011100110110…
…0000101100011011
312011101102002001101
41313031200230123
513044001433431
6530243332231
7100363656454
oct16715405433
95141362041
102000030491
11936a68568
12479981077
1325b4881c4
1414d8a612b
15ba8bb961
hex77360b1b

2000030491 has 8 divisors (see below), whose sum is σ = 2050836480. Its totient is φ = 1949419752.

The previous prime is 2000030479. The next prime is 2000030507. The reversal of 2000030491 is 1940300002.

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-2000030491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2000030191) 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, 27955 + ... + 69148.

It is an arithmetic number, because the mean of its divisors is an integer number (256354560).

Almost surely, 22000030491 is an apocalyptic number.

2000030491 is a deficient number, since it is larger than the sum of its proper divisors (50805989).

2000030491 is an equidigital number, since it uses as much as digits as its factorization.

2000030491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97625.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 2000030491 is about 44721.7004484400. The cubic root of 2000030491 is about 1259.9274525711.

Adding to 2000030491 its reverse (1940300002), we get a palindrome (3940330493).

The spelling of 2000030491 in words is "two billion, thirty thousand, four hundred ninety-one".

Divisors: 1 43 479 20597 97103 4175429 46512337 2000030491