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30520514045 = 577138931573
BaseRepresentation
bin11100011011001010…
…100001010111111101
32220210000201202102002
4130123022201113331
51000001222422140
622004304312045
72130220042340
oct343312412775
986700652362
1030520514045
1111a42041a2a
125ab9312625
132b55180588
141697620457
15bd9695415
hex71b2a15fd

30520514045 has 32 divisors (see below), whose sum is σ = 42556700160. Its totient is φ = 20579892480.

The previous prime is 30520514027. The next prime is 30520514053. The reversal of 30520514045 is 54041502503.

It is not a de Polignac number, because 30520514045 - 26 = 30520513981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30520513999 and 30520514017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 950879 + ... + 982451.

It is an arithmetic number, because the mean of its divisors is an integer number (1329896880).

Almost surely, 230520514045 is an apocalyptic number.

30520514045 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30520514045 is a deficient number, since it is larger than the sum of its proper divisors (12036186115).

30520514045 is a wasteful number, since it uses less digits than its factorization.

30520514045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32045.

The product of its (nonzero) digits is 12000, while the sum is 29.

The spelling of 30520514045 in words is "thirty billion, five hundred twenty million, five hundred fourteen thousand, forty-five".

Divisors: 1 5 7 35 71 355 389 497 1945 2485 2723 13615 27619 31573 138095 157865 193333 221011 966665 1105055 2241683 11208415 12281897 15691781 61409485 78458905 85973279 429866395 872014687 4360073435 6104102809 30520514045