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30857610305 = 56805990679
BaseRepresentation
bin11100101111010000…
…011100010001000001
32221122112001000112202
4130233100130101001
51001144022012210
622101545402545
72141452234304
oct345720342101
987575030482
1030857610305
11120a5353385
125b92199455
132ba9c69312
1416ca2ccb3b
15c090809a5
hex72f41c441

30857610305 has 8 divisors (see below), whose sum is σ = 37030084800. Its totient is φ = 24685453296.

The previous prime is 30857610293. The next prime is 30857610317. The reversal of 30857610305 is 50301675803.

It is an interprime number because it is at equal distance from previous prime (30857610293) and next prime (30857610317).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30857610305 - 26 = 30857610241 is a prime.

It is a super-2 number, since 2×308576103052 (a number of 22 digits) contains 22 as substring.

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, 294956 + ... + 385634.

It is an arithmetic number, because the mean of its divisors is an integer number (4628760600).

Almost surely, 230857610305 is an apocalyptic number.

It is an amenable number.

30857610305 is a deficient number, since it is larger than the sum of its proper divisors (6172474495).

30857610305 is an equidigital number, since it uses as much as digits as its factorization.

30857610305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158743.

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 30857610305 in words is "thirty billion, eight hundred fifty-seven million, six hundred ten thousand, three hundred five".

Divisors: 1 5 68059 90679 340295 453395 6171522061 30857610305