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30287111937 = 3192157178127
BaseRepresentation
bin11100001101010000…
…001010011100000001
32220011202112200220120
4130031100022130001
5444012000040222
621525205530453
72121354126615
oct341520123401
986152480816
1030287111937
1111932315525
125a53113a29
132b189cc914
141674625345
15bc3e3e15c
hex70d40a701

30287111937 has 24 divisors (see below), whose sum is σ = 42891797376. Its totient is φ = 19006756704.

The previous prime is 30287111893. The next prime is 30287111977. The reversal of 30287111937 is 73911178203.

It is not a de Polignac number, because 30287111937 - 216 = 30287046401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30287111977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80968 + ... + 259094.

It is an arithmetic number, because the mean of its divisors is an integer number (1787158224).

Almost surely, 230287111937 is an apocalyptic number.

It is an amenable number.

30287111937 is a deficient number, since it is larger than the sum of its proper divisors (12604685439).

30287111937 is a wasteful number, since it uses less digits than its factorization.

30287111937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178325 (or 178306 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 42.

The spelling of 30287111937 in words is "thirty billion, two hundred eighty-seven million, one hundred eleven thousand, nine hundred thirty-seven".

Divisors: 1 3 19 57 157 361 471 1083 2983 8949 56677 170031 178127 534381 3384413 10153239 27965939 64303847 83897817 192911541 531352841 1594058523 10095703979 30287111937