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20601104800 = 255225751381
BaseRepresentation
bin10011001011111010…
…111110100110100000
31222011201121120000111
4103023322332212200
5314142340323200
613244121101104
71326341334013
oct231372764640
958151546014
1020601104800
118811871a51
123bab327794
131c3409c353
14dd607937a
158089060ba
hex4cbebe9a0

20601104800 has 36 divisors (see below), whose sum is σ = 50292449046. Its totient is φ = 8240441600.

The previous prime is 20601104791. The next prime is 20601104833. The reversal of 20601104800 is 840110602.

It can be written as a sum of positive squares in 3 ways, for example, as 19787486224 + 813618576 = 140668^2 + 28524^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12874891 + ... + 12876490.

Almost surely, 220601104800 is an apocalyptic number.

20601104800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20601104800 is an abundant number, since it is smaller than the sum of its proper divisors (29691344246).

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

20601104800 is a wasteful number, since it uses less digits than its factorization.

20601104800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25751401 (or 25751388 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The spelling of 20601104800 in words is "twenty billion, six hundred one million, one hundred four thousand, eight hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 80 100 160 200 400 800 25751381 51502762 103005524 128756905 206011048 257513810 412022096 515027620 643784525 824044192 1030055240 1287569050 2060110480 2575138100 4120220960 5150276200 10300552400 20601104800