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30123956080 = 245376549451
BaseRepresentation
bin11100000011100001…
…110001011101110000
32212202101112112011001
4130003201301131300
5443143213043310
621501100531344
72114333254561
oct340341613560
985671475131
1030123956080
1111859208079
125a08550b54
132ac0c758aa
14165aab4168
15bb496193a
hex703871770

30123956080 has 20 divisors (see below), whose sum is σ = 70038198072. Its totient is φ = 12049582400.

The previous prime is 30123956077. The next prime is 30123956119. The reversal of 30123956080 is 8065932103.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188274646 + ... + 188274805.

Almost surely, 230123956080 is an apocalyptic number.

It is an amenable number.

30123956080 is an abundant number, since it is smaller than the sum of its proper divisors (39914241992).

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

30123956080 is a wasteful number, since it uses less digits than its factorization.

30123956080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376549464 (or 376549458 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 30123956080 in words is "thirty billion, one hundred twenty-three million, nine hundred fifty-six thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 376549451 753098902 1506197804 1882747255 3012395608 3765494510 6024791216 7530989020 15061978040 30123956080