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20000310000 = 243541160607
BaseRepresentation
bin10010101000000111…
…001000001011110000
31220121212010000111020
4102220013020023300
5311430034410000
613104340015440
71305424554456
oct225007101360
956555100436
1020000310000
118533720a20
123a62091580
131b69785a78
14d7a3669d6
157c0cccba0
hex4a81c82f0

20000310000 has 200 divisors, whose sum is σ = 70434253824. Its totient is φ = 4848480000.

The previous prime is 20000309983. The next prime is 20000310019. The reversal of 20000310000 is 1300002.

It is a tau number, because it is divible by the number of its divisors (200).

It is a super-2 number, since 2×200003100002 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (6).

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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 299697 + ... + 360303.

Almost surely, 220000310000 is an apocalyptic number.

20000310000 is a gapful number since it is divisible by the number (20) 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 20000310000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35217126912).

20000310000 is an abundant number, since it is smaller than the sum of its proper divisors (50433943824).

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

20000310000 is a wasteful number, since it uses less digits than its factorization.

20000310000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60649 (or 60628 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 6.

Adding to 20000310000 its reverse (1300002), we get a palindrome (20001610002).

The spelling of 20000310000 in words is "twenty billion, three hundred ten thousand".