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20202031200 = 25352131953643
BaseRepresentation
bin10010110100001000…
…101000100001100000
31221010220200111221210
4102310020220201200
5312333204444300
613140343350120
71313424301101
oct226410504140
957126614853
1020202031200
11862757a05a
123ab9752340
131b9c4c3620
14d990763a8
157d3877050
hex4b4228860

20202031200 has 576 divisors, whose sum is σ = 76067631360. Its totient is φ = 4615004160.

The previous prime is 20202031159. The next prime is 20202031207. The reversal of 20202031200 is 213020202.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202031207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 31418079 + ... + 31418721.

It is an arithmetic number, because the mean of its divisors is an integer number (132061860).

Almost surely, 220202031200 is an apocalyptic number.

20202031200 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 20202031200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38033815680).

20202031200 is an abundant number, since it is smaller than the sum of its proper divisors (55865600160).

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

20202031200 is a wasteful number, since it uses less digits than its factorization.

20202031200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751 (or 738 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 20202031200 its reverse (213020202), we get a palindrome (20415051402).

The spelling of 20202031200 in words is "twenty billion, two hundred two million, thirty-one thousand, two hundred".