Search a number
-
+
30839207903 = 722973191773
BaseRepresentation
bin11100101110001010…
…001111011111011111
32221121020102002012022
4130232022033133133
51001124314123103
622100051130355
72141136641060
oct345612173737
987536362168
1030839207903
1112095a24389
125b87ba39bb
132ba61c511a
1416c7a9c567
15c07648138
hex72e28f7df

30839207903 has 8 divisors (see below), whose sum is σ = 35246527008. Its totient is φ = 26432318304.

The previous prime is 30839207899. The next prime is 30839207909. The reversal of 30839207903 is 30970293803.

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

It is not a de Polignac number, because 30839207903 - 22 = 30839207899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30839207909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64925 + ... + 256697.

It is an arithmetic number, because the mean of its divisors is an integer number (4405815876).

Almost surely, 230839207903 is an apocalyptic number.

30839207903 is a deficient number, since it is larger than the sum of its proper divisors (4407319105).

30839207903 is a wasteful number, since it uses less digits than its factorization.

30839207903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214753.

The product of its (nonzero) digits is 244944, while the sum is 44.

The spelling of 30839207903 in words is "thirty billion, eight hundred thirty-nine million, two hundred seven thousand, nine hundred three".

Divisors: 1 7 22973 160811 191773 1342411 4405601129 30839207903