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30640654284 = 2232671955967
BaseRepresentation
bin11100100010010100…
…110100011111001100
32221002101210111211120
4130202110310133030
51000223001414114
622024235320540
72133206156412
oct344224643714
987071714746
1030640654284
1111aa393a089
125b315b0150
132b74026286
1416a95752b2
15be4ec75a9
hex7225347cc

30640654284 has 24 divisors (see below), whose sum is σ = 71521701888. Its totient is φ = 10209716880.

The previous prime is 30640654283. The next prime is 30640654301. The reversal of 30640654284 is 48245604603.

It is not an unprimeable number, because it can be changed into a prime (30640654283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 445932 + ... + 510035.

It is an arithmetic number, because the mean of its divisors is an integer number (2980070912).

Almost surely, 230640654284 is an apocalyptic number.

It is an amenable number.

30640654284 is an abundant number, since it is smaller than the sum of its proper divisors (40881047604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30640654284 is a wasteful number, since it uses less digits than its factorization.

30640654284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 958645 (or 958643 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 42.

The spelling of 30640654284 in words is "thirty billion, six hundred forty million, six hundred fifty-four thousand, two hundred eighty-four".

Divisors: 1 2 3 4 6 12 2671 5342 8013 10684 16026 32052 955967 1911934 2867901 3823868 5735802 11471604 2553387857 5106775714 7660163571 10213551428 15320327142 30640654284