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20000412320 = 255731919181
BaseRepresentation
bin10010101000000111…
…100001001010100000
31220121212022012211212
4102220013201022200
5311430101143240
613104342125252
71305425462000
oct225007411240
956555265755
1020000412320
118533790889
123a62120828
131b697c0505
14d7a392000
157c0ced165
hex4a81e12a0

20000412320 has 192 divisors, whose sum is σ = 58006368000. Its totient is φ = 6496035840.

The previous prime is 20000412283. The next prime is 20000412371. The reversal of 20000412320 is 2321400002.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 20000412295 and 20000412304.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1033130 + ... + 1052310.

It is an arithmetic number, because the mean of its divisors is an integer number (302116500).

Almost surely, 220000412320 is an apocalyptic number.

20000412320 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 20000412320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29003184000).

20000412320 is an abundant number, since it is smaller than the sum of its proper divisors (38005955680).

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

20000412320 is a wasteful number, since it uses less digits than its factorization.

20000412320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19236 (or 19214 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 20000412320 its reverse (2321400002), we get a palindrome (22321812322).

The spelling of 20000412320 in words is "twenty billion, four hundred twelve thousand, three hundred twenty".