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30855168000 = 215355331
BaseRepresentation
bin11100101111000111…
…001000000000000000
32221122100102221100000
4130233013020000000
51001142410334000
622101421200000
72141422413006
oct345707100000
987570387300
1030855168000
11120a3a35448
125b91400000
132ba95c2777
1416c9c54a76
15c08c4c000
hex72f1c8000

30855168000 has 768 divisors, whose sum is σ = 119082862080. Its totient is φ = 7962624000.

The previous prime is 30855167999. The next prime is 30855168007. The reversal of 30855168000 is 86155803.

It is a tau number, because it is divible by the number of its divisors (768).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (30855168007) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 995327985 + ... + 995328015.

It is an arithmetic number, because the mean of its divisors is an integer number (155055810).

Almost surely, 230855168000 is an apocalyptic number.

30855168000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30855168000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59541431040).

30855168000 is an abundant number, since it is smaller than the sum of its proper divisors (88227694080).

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

30855168000 is an frugal number, since it uses more digits than its factorization.

30855168000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The spelling of 30855168000 in words is "thirty billion, eight hundred fifty-five million, one hundred sixty-eight thousand".