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30683032660 = 2257231309217
BaseRepresentation
bin11100100100110110…
…011110110001010100
32221012100112120001001
4130210312132301110
51000314324021120
622032351513044
72134232321500
oct344466366124
987170476031
1030683032660
1112015854635
125b43828784
132b7ca43537
1416b1047300
15be8a98e0a
hex724d9ec54

30683032660 has 36 divisors (see below), whose sum is σ = 74954267892. Its totient is φ = 10519896576.

The previous prime is 30683032643. The next prime is 30683032669. The reversal of 30683032660 is 6623038603.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21191207184 + 9491825476 = 145572^2 + 97426^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30683032669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15653629 + ... + 15655588.

It is an arithmetic number, because the mean of its divisors is an integer number (2082062997).

Almost surely, 230683032660 is an apocalyptic number.

It is an amenable number.

30683032660 is an abundant number, since it is smaller than the sum of its proper divisors (44271235232).

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

30683032660 is a wasteful number, since it uses less digits than its factorization.

30683032660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31309240 (or 31309231 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 37.

The spelling of 30683032660 in words is "thirty billion, six hundred eighty-three million, thirty-two thousand, six hundred sixty".

Divisors: 1 2 4 5 7 10 14 20 28 35 49 70 98 140 196 245 490 980 31309217 62618434 125236868 156546085 219164519 313092170 438329038 626184340 876658076 1095822595 1534151633 2191645190 3068303266 4383290380 6136606532 7670758165 15341516330 30683032660