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20210030000 = 24542021003
BaseRepresentation
bin10010110100100111…
…001001010110110000
31221011110201220020122
4102310213021112300
5312342231430000
613141231025412
71313552264156
oct226447112660
957143656218
1020210030000
118631042736
123b0036b268
131ba1064344
14d9a1593d6
157d4407085
hex4b49c95b0

20210030000 has 50 divisors (see below), whose sum is σ = 48930527844. Its totient is φ = 8084008000.

The previous prime is 20210029943. The next prime is 20210030047. The reversal of 20210030000 is 3001202.

It is a tau number, because it is divible by the number of its divisors (50).

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 20210030000.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1000502 + ... + 1020501.

Almost surely, 220210030000 is an apocalyptic number.

20210030000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20210030000 is an abundant number, since it is smaller than the sum of its proper divisors (28720497844).

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

20210030000 is an equidigital number, since it uses as much as digits as its factorization.

20210030000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021031 (or 2021010 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 8.

Adding to 20210030000 its reverse (3001202), we get a palindrome (20213031202).

The spelling of 20210030000 in words is "twenty billion, two hundred ten million, thirty thousand".

Divisors: 1 2 4 5 8 10 16 20 25 40 50 80 100 125 200 250 400 500 625 1000 1250 2000 2500 5000 10000 2021003 4042006 8084012 10105015 16168024 20210030 32336048 40420060 50525075 80840120 101050150 161680240 202100300 252625375 404200600 505250750 808401200 1010501500 1263126875 2021003000 2526253750 4042006000 5052507500 10105015000 20210030000