Search a number
-
+
30947355934 = 2111782746941
BaseRepresentation
bin11100110100100110…
…110010110100011110
32221212202220120101221
4130310212302310132
51001340010342214
622114513123554
72143622120335
oct346446626436
987782816357
1030947355934
1112140a80620
125bb82595ba
132bc272c541
1416d81b0d1c
15c11dabe24
hex7349b2d1e

30947355934 has 16 divisors (see below), whose sum is σ = 53620018416. Its totient is φ = 13239510400.

The previous prime is 30947355911. The next prime is 30947355937. The reversal of 30947355934 is 43955374903.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30947355937) 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, 41373097 + ... + 41373844.

It is an arithmetic number, because the mean of its divisors is an integer number (3351251151).

Almost surely, 230947355934 is an apocalyptic number.

30947355934 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

30947355934 is a deficient number, since it is larger than the sum of its proper divisors (22672662482).

30947355934 is a wasteful number, since it uses less digits than its factorization.

30947355934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82746971.

The product of its (nonzero) digits is 6123600, while the sum is 52.

The spelling of 30947355934 in words is "thirty billion, nine hundred forty-seven million, three hundred fifty-five thousand, nine hundred thirty-four".

Divisors: 1 2 11 17 22 34 187 374 82746941 165493882 910216351 1406697997 1820432702 2813395994 15473677967 30947355934