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30512411144 = 2319290369149
BaseRepresentation
bin11100011010101011…
…100111001000001000
32220202110111002022122
4130122223213020020
5444442134124034
622003414510412
72130061133615
oct343253471010
986673432278
1030512411144
1111a38508116
125ab6665408
132b535a4367
14169651150c
15bd8ae462e
hex71aae7208

30512411144 has 32 divisors (see below), whose sum is σ = 60243480000. Its totient is φ = 14448059712.

The previous prime is 30512411129. The next prime is 30512411173. The reversal of 30512411144 is 44111421503.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406682 + ... + 475830.

It is an arithmetic number, because the mean of its divisors is an integer number (1882608750).

Almost surely, 230512411144 is an apocalyptic number.

It is an amenable number.

30512411144 is a deficient number, since it is larger than the sum of its proper divisors (29731068856).

30512411144 is a wasteful number, since it uses less digits than its factorization.

30512411144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72077 (or 72073 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 30512411144 its reverse (44111421503), we get a palindrome (74623832647).

The spelling of 30512411144 in words is "thirty billion, five hundred twelve million, four hundred eleven thousand, one hundred forty-four".

Divisors: 1 2 4 8 19 38 76 152 2903 5806 11612 23224 55157 69149 110314 138298 220628 276596 441256 553192 1313831 2627662 5255324 10510648 200739547 401479094 802958188 1605916376 3814051393 7628102786 15256205572 30512411144