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30719546540 = 2251535977327
BaseRepresentation
bin11100100111000001…
…110001010010101100
32221021220020122122222
4130213001301102230
51000403200442130
622040134254512
72135154560114
oct344701612254
987256218588
1030719546540
1112034423aa1
125b53ab7438
132b87489397
1416b5c30044
15bebdacce5
hex7270714ac

30719546540 has 12 divisors (see below), whose sum is σ = 64511047776. Its totient is φ = 12287818608.

The previous prime is 30719546527. The next prime is 30719546549. The reversal of 30719546540 is 4564591703.

It is a junction number, because it is equal to n+sod(n) for n = 30719546491 and 30719546500.

It is not an unprimeable number, because it can be changed into a prime (30719546549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 767988644 + ... + 767988683.

It is an arithmetic number, because the mean of its divisors is an integer number (5375920648).

Almost surely, 230719546540 is an apocalyptic number.

It is an amenable number.

30719546540 is an abundant number, since it is smaller than the sum of its proper divisors (33791501236).

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

30719546540 is a wasteful number, since it uses less digits than its factorization.

30719546540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535977336 (or 1535977334 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 44.

The spelling of 30719546540 in words is "thirty billion, seven hundred nineteen million, five hundred forty-six thousand, five hundred forty".

Divisors: 1 2 4 5 10 20 1535977327 3071954654 6143909308 7679886635 15359773270 30719546540