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20204893200 = 24352531631949
BaseRepresentation
bin10010110100010011…
…100011010000010000
31221011010001220212210
4102310103203100100
5312334423040300
613140524552120
71313460521112
oct226423432020
957133056783
1020204893200
118629154348
123aba6b2640
131b9cc8620b
14d995bd3b2
157d3c40050
hex4b44e3410

20204893200 has 240 divisors, whose sum is σ = 66382804800. Its totient is φ = 5251184640.

The previous prime is 20204893199. The next prime is 20204893217. The reversal of 20204893200 is 239840202.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (30).

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 47 ways as a sum of consecutive naturals, for example, 10365826 + ... + 10367774.

It is an arithmetic number, because the mean of its divisors is an integer number (276595020).

Almost surely, 220204893200 is an apocalyptic number.

20204893200 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 20204893200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33191402400).

20204893200 is an abundant number, since it is smaller than the sum of its proper divisors (46177911600).

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

20204893200 is a wasteful number, since it uses less digits than its factorization.

20204893200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2186 (or 2175 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The spelling of 20204893200 in words is "twenty billion, two hundred four million, eight hundred ninety-three thousand, two hundred".