Search a number
-
+
30697375608 = 2332439915173
BaseRepresentation
bin11100100101101101…
…001100011101111000
32221020100112020212100
4130211231030131320
51000332012004413
622034023143400
72134465246614
oct344555143570
987210466770
1030697375608
1112022960709
125b485a4b60
132b829c5aa3
1416b2cdc344
15be9e7da73
hex725b4c778

30697375608 has 48 divisors (see below), whose sum is σ = 85072192920. Its totient is φ = 9994493376.

The previous prime is 30697375607. The next prime is 30697375663. The reversal of 30697375608 is 80657379603.

30697375608 is a `hidden beast` number, since 3 + 0 + 6 + 9 + 73 + 7 + 560 + 8 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30697375601) 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 11 ways as a sum of consecutive naturals, for example, 4954491 + ... + 4960682.

Almost surely, 230697375608 is an apocalyptic number.

It is an amenable number.

30697375608 is an abundant number, since it is smaller than the sum of its proper divisors (54374817312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30697375608 is a wasteful number, since it uses less digits than its factorization.

30697375608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9915228 (or 9915221 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 54.

The spelling of 30697375608 in words is "thirty billion, six hundred ninety-seven million, three hundred seventy-five thousand, six hundred eight".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 43 72 86 129 172 258 344 387 516 774 1032 1548 3096 9915173 19830346 29745519 39660692 59491038 79321384 89236557 118982076 178473114 237964152 356946228 426352439 713892456 852704878 1279057317 1705409756 2558114634 3410819512 3837171951 5116229268 7674343902 10232458536 15348687804 30697375608