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30280005505 = 56121989381
BaseRepresentation
bin11100001100110101…
…000011011110000001
32220011021011122201101
4130030311003132001
5444003140134010
621524353334401
72121236541301
oct341465033601
986137148641
1030280005505
1111929301342
125a50867401
132b173b2129
1416736d5601
15bc34d873a
hex70cd43781

30280005505 has 8 divisors (see below), whose sum is σ = 36341979624. Its totient is φ = 24220022400.

The previous prime is 30280005493. The next prime is 30280005523. The reversal of 30280005505 is 50550008203.

It can be written as a sum of positive squares in 4 ways, for example, as 55487601 + 30224517904 = 7449^2 + 173852^2 .

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

It is not a de Polignac number, because 30280005505 - 213 = 30279997313 is a prime.

It is a Duffinian number.

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, 464086 + ... + 525295.

It is an arithmetic number, because the mean of its divisors is an integer number (4542747453).

Almost surely, 230280005505 is an apocalyptic number.

It is an amenable number.

30280005505 is a deficient number, since it is larger than the sum of its proper divisors (6061974119).

30280005505 is an equidigital number, since it uses as much as digits as its factorization.

30280005505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995507.

The product of its (nonzero) digits is 6000, while the sum is 28.

The spelling of 30280005505 in words is "thirty billion, two hundred eighty million, five thousand, five hundred five".

Divisors: 1 5 6121 30605 989381 4946905 6056001101 30280005505