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30524212005 = 357819135491
BaseRepresentation
bin11100011011011000…
…101000001100100101
32220210021200122001120
4130123120220030211
51000003144241010
622004515444153
72130263343510
oct343330501445
986707618046
1030524212005
1111a441382a1
125aba5b6659
132b55b76811
141697d03d77
15bd9b75e70
hex71b628325

30524212005 has 32 divisors (see below), whose sum is σ = 55824089088. Its totient is φ = 13951828800.

The previous prime is 30524212003. The next prime is 30524212051. The reversal of 30524212005 is 50021242503.

It is not a de Polignac number, because 30524212005 - 21 = 30524212003 is a prime.

It is a super-2 number, since 2×305242120052 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30524212001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 842310 + ... + 877800.

It is an arithmetic number, because the mean of its divisors is an integer number (1744502784).

Almost surely, 230524212005 is an apocalyptic number.

30524212005 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30524212005 is a deficient number, since it is larger than the sum of its proper divisors (25299877083).

30524212005 is a wasteful number, since it uses less digits than its factorization.

30524212005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43697.

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 30524212005 its reverse (50021242503), we get a palindrome (80545454508).

The spelling of 30524212005 in words is "thirty billion, five hundred twenty-four million, two hundred twelve thousand, five".

Divisors: 1 3 5 7 15 21 35 105 8191 24573 35491 40955 57337 106473 122865 172011 177455 248437 286685 532365 745311 860055 1242185 3726555 290706781 872120343 1453533905 2034947467 4360601715 6104842401 10174737335 30524212005