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30020320000 = 28541137461
BaseRepresentation
bin11011111101010110…
…011011101100000000
32212111011112021011201
4123331112123230000
5442440200220000
621442515350544
72111634336556
oct337526335400
985434467151
1030020320000
1111805762820
1259998b2454
132aa565b078
14164b017bd6
15baa7de96a
hex6fd59bb00

30020320000 has 360 divisors, whose sum is σ = 84077299152. Its totient is φ = 10598400000.

The previous prime is 30020319983. The next prime is 30020320003. The reversal of 30020320000 is 2302003.

It is a super-2 number, since 2×300203200002 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (30020320003) 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 39 ways as a sum of consecutive naturals, for example, 65119770 + ... + 65120230.

Almost surely, 230020320000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30020320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42038649576).

30020320000 is an abundant number, since it is smaller than the sum of its proper divisors (54056979152).

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

30020320000 is an equidigital number, since it uses as much as digits as its factorization.

30020320000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545 (or 516 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 10.

Adding to 30020320000 its reverse (2302003), we get a palindrome (30022622003).

The spelling of 30020320000 in words is "thirty billion, twenty million, three hundred twenty thousand".