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30774160257 = 31731371792939
BaseRepresentation
bin11100101010010010…
…000110101110000001
32221102201000022121020
4130222102012232001
51001011141112012
622045405020053
72136420021561
oct345222065601
987381008536
1030774160257
11120622360a5
125b6a254629
132b9589b7a9
1416bd1a8da1
15c01a99a8c
hex72a486b81

30774160257 has 64 divisors (see below), whose sum is σ = 46332518400. Its totient is φ = 18073635840.

The previous prime is 30774160171. The next prime is 30774160297. The reversal of 30774160257 is 75206147703.

It is not a de Polignac number, because 30774160257 - 27 = 30774160129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30774160297) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10469494 + ... + 10472432.

It is an arithmetic number, because the mean of its divisors is an integer number (723945600).

Almost surely, 230774160257 is an apocalyptic number.

30774160257 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

30774160257 is a deficient number, since it is larger than the sum of its proper divisors (15558358143).

30774160257 is a wasteful number, since it uses less digits than its factorization.

30774160257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3206.

The product of its (nonzero) digits is 246960, while the sum is 42.

The spelling of 30774160257 in words is "thirty billion, seven hundred seventy-four million, one hundred sixty thousand, two hundred fifty-seven".

Divisors: 1 3 17 31 37 51 93 111 179 527 537 629 1147 1581 1887 2939 3043 3441 5549 6623 8817 9129 16647 19499 19869 49963 58497 91109 94333 108743 112591 149889 205313 273327 282999 326229 337773 526081 615939 1548853 1578243 1848631 3371033 3490321 4646559 5545893 8943377 10113099 10470963 16308511 19464997 26830131 48925533 57307561 58394991 171922683 277244687 330904949 603414907 831734061 992714847 1810244721 10258053419 30774160257