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30006000000 = 2732561667
BaseRepresentation
bin11011111100011111…
…110011100110000000
32212110011120201211100
4123330133303212000
5442423014000000
621441244414400
72111401535364
oct337437634600
985404521740
1030006000000
11117a8671a09
125994b47400
132aa26b60b2
14164916b2a4
15ba9411a00
hex6fc7f3980

30006000000 has 336 divisors, whose sum is σ = 107995102020. Its totient is φ = 7996800000.

The previous prime is 30005999987. The next prime is 30006000007. The reversal of 30006000000 is 60003.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30006000007) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 17999167 + ... + 18000833.

Almost surely, 230006000000 is an apocalyptic number.

30006000000 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 30006000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53997551010).

30006000000 is an abundant number, since it is smaller than the sum of its proper divisors (77989102020).

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

30006000000 is an frugal number, since it uses more digits than its factorization.

30006000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1717 (or 1677 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

Adding to 30006000000 its reverse (60003), we get a palindrome (30006060003).

The spelling of 30006000000 in words is "thirty billion, six million", and thus it is an aban number, an eban number, and an uban number.