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30686852955 = 3511247359731
BaseRepresentation
bin11100100101000101…
…000011011101011011
32221012121201122111110
4130211011003131123
51000321313243310
622033005431403
72134306642413
oct344505033533
987177648443
1030686852955
1112017a23900
125b44b6b563
132b80780375
1416b175d643
15be90a0d20
hex72514375b

30686852955 has 48 divisors (see below), whose sum is σ = 55116698112. Its totient is φ = 14561870400.

The previous prime is 30686852923. The next prime is 30686852957. The reversal of 30686852955 is 55925868603.

It is not a de Polignac number, because 30686852955 - 25 = 30686852923 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30686852895 and 30686852904.

It is not an unprimeable number, because it can be changed into a prime (30686852957) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 94561 + ... + 265170.

It is an arithmetic number, because the mean of its divisors is an integer number (1148264544).

Almost surely, 230686852955 is an apocalyptic number.

30686852955 is a deficient number, since it is larger than the sum of its proper divisors (24429845157).

30686852955 is a wasteful number, since it uses less digits than its factorization.

30686852955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359808 (or 359797 counting only the distinct ones).

The product of its (nonzero) digits is 15552000, while the sum is 57.

The spelling of 30686852955 in words is "thirty billion, six hundred eighty-six million, eight hundred fifty-two thousand, nine hundred fifty-five".

Divisors: 1 3 5 11 15 33 47 55 121 141 165 235 363 517 605 705 1551 1815 2585 5687 7755 17061 28435 85305 359731 1079193 1798655 3957041 5395965 11871123 16907357 19785205 43527451 50722071 59355615 84536785 130582353 185980927 217637255 253610355 557942781 652911765 929904635 2045790197 2789713905 6137370591 10228950985 30686852955