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30078080181 = 3231209951361
BaseRepresentation
bin11100000000110010…
…110001010010110101
32212122012012210020200
4130000302301102311
5443044442031211
621452341351113
72113235314602
oct340062612265
985565183220
1030078080181
1111835323906
1259b5108499
132ab46026a6
1416549716a9
15bb08edb56
hex700cb14b5

30078080181 has 24 divisors (see below), whose sum is σ = 44869843200. Its totient is φ = 19395590400.

The previous prime is 30078080159. The next prime is 30078080203. The reversal of 30078080181 is 18108087003.

It is an interprime number because it is at equal distance from previous prime (30078080159) and next prime (30078080203).

It is not a de Polignac number, because 30078080181 - 221 = 30075983029 is a prime.

It is a super-2 number, since 2×300780801812 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30078084181) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 559941 + ... + 611301.

It is an arithmetic number, because the mean of its divisors is an integer number (1869576800).

Almost surely, 230078080181 is an apocalyptic number.

30078080181 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

30078080181 is a deficient number, since it is larger than the sum of its proper divisors (14791763019).

30078080181 is a wasteful number, since it uses less digits than its factorization.

30078080181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53497 (or 53494 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The spelling of 30078080181 in words is "thirty billion, seventy-eight million, eighty thousand, one hundred eighty-one".

Divisors: 1 3 9 31 93 279 2099 6297 18891 51361 65069 154083 195207 462249 585621 1592191 4776573 14329719 107806739 323420217 970260651 3342008909 10026026727 30078080181