Search a number
-
+
30682724261 = 717435996233
BaseRepresentation
bin11100100100110101…
…010011011110100101
32221012022221212222212
4130210311103132211
51000314234134021
622032341133205
72134226565410
oct344465233645
987168855885
1030682724261
1112015663962
125b436ba205
132b7c966057
1416b0da6b77
15be8a3785b
hex724d537a5

30682724261 has 16 divisors (see below), whose sum is σ = 37992138624. Its totient is φ = 24176807424.

The previous prime is 30682724209. The next prime is 30682724299. The reversal of 30682724261 is 16242728603.

It is not a de Polignac number, because 30682724261 - 214 = 30682707877 is a prime.

It is a super-2 number, since 2×306827242612 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30682724461) 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 15 ways as a sum of consecutive naturals, for example, 2993000 + ... + 3003233.

It is an arithmetic number, because the mean of its divisors is an integer number (2374508664).

Almost surely, 230682724261 is an apocalyptic number.

It is an amenable number.

30682724261 is a deficient number, since it is larger than the sum of its proper divisors (7309414363).

30682724261 is a wasteful number, since it uses less digits than its factorization.

30682724261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5996300.

The product of its (nonzero) digits is 193536, while the sum is 41.

The spelling of 30682724261 in words is "thirty billion, six hundred eighty-two million, seven hundred twenty-four thousand, two hundred sixty-one".

Divisors: 1 7 17 43 119 301 731 5117 5996233 41973631 101935961 257838019 713551727 1804866133 4383246323 30682724261