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30018873568 = 252341994793
BaseRepresentation
bin11011111101010000…
…111010100011100000
32212111001210210001011
4123331100322203200
5442434312423233
621442424350304
72111616133555
oct337520724340
985431723034
1030018873568
1111804965022
125999315394
132aa52728a8
14164ab5ca2c
15baa6060cd
hex6fd43a8e0

30018873568 has 48 divisors (see below), whose sum is σ = 63173398176. Its totient is φ = 14006671360.

The previous prime is 30018873557. The next prime is 30018873569. The reversal of 30018873568 is 86537881003.

It is a super-2 number, since 2×300188735682 (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 (30018873569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 467221 + ... + 527572.

It is an arithmetic number, because the mean of its divisors is an integer number (1316112462).

Almost surely, 230018873568 is an apocalyptic number.

It is an amenable number.

30018873568 is an abundant number, since it is smaller than the sum of its proper divisors (33154524608).

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

30018873568 is a wasteful number, since it uses less digits than its factorization.

30018873568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994867 (or 994859 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 49.

It can be divided in two parts, 30018873 and 568, that added together give a square (30019441 = 54792).

The spelling of 30018873568 in words is "thirty billion, eighteen million, eight hundred seventy-three thousand, five hundred sixty-eight".

Divisors: 1 2 4 8 16 23 32 41 46 82 92 164 184 328 368 656 736 943 1312 1886 3772 7544 15088 30176 994793 1989586 3979172 7958344 15916688 22880239 31833376 40786513 45760478 81573026 91520956 163146052 183041912 326292104 366083824 652584208 732167648 938089799 1305168416 1876179598 3752359196 7504718392 15009436784 30018873568