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30028680000 = 263254117583
BaseRepresentation
bin11011111101110110…
…010100101101000000
32212111202020222221100
4123331312110231000
5442444320230000
621443414454400
72112065366004
oct337566245500
985452228840
1030028680000
111180a452810
1259a0664400
132aa72c7307
14164c192704
15bab3e1a00
hex6fdd94b40

30028680000 has 420 divisors, whose sum is σ = 117348536448. Its totient is φ = 7278720000.

The previous prime is 30028679977. The next prime is 30028680001. The reversal of 30028680000 is 8682003.

30028680000 is a `hidden beast` number, since 300 + 286 + 80 + 0 + 0 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30028680001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 3956209 + ... + 3963791.

Almost surely, 230028680000 is an apocalyptic number.

30028680000 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 30028680000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58674268224).

30028680000 is an abundant number, since it is smaller than the sum of its proper divisors (87319856448).

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

30028680000 is a wasteful number, since it uses less digits than its factorization.

30028680000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7632 (or 7604 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The spelling of 30028680000 in words is "thirty billion, twenty-eight million, six hundred eighty thousand".