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480240020 = 225133749921
BaseRepresentation
bin11100100111111…
…110000110010100
31020110122201110102
4130213332012110
51440420140040
6115353113232
714620654451
oct3447760624
91213581412
10480240020
112270a0487
121149b8818
1378656cc0
1447ad0828
152c263515
hex1c9fe194

480240020 has 48 divisors (see below), whose sum is σ = 1115457168. Its totient is φ = 172523520.

The previous prime is 480239993. The next prime is 480240037. The reversal of 480240020 is 20042084.

It can be written as a sum of positive squares in 8 ways, for example, as 15147664 + 465092356 = 3892^2 + 21566^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 480239974 and 480240001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15341 + ... + 34580.

It is an arithmetic number, because the mean of its divisors is an integer number (23238691).

Almost surely, 2480240020 is an apocalyptic number.

It is an amenable number.

480240020 is an abundant number, since it is smaller than the sum of its proper divisors (635217148).

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

480240020 is a wasteful number, since it uses less digits than its factorization.

480240020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49980 (or 49978 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 480240020 is about 21914.3792976210. The cubic root of 480240020 is about 783.1040129496.

The spelling of 480240020 in words is "four hundred eighty million, two hundred forty thousand, twenty".

Divisors: 1 2 4 5 10 13 20 26 37 52 65 74 130 148 185 260 370 481 740 962 1924 2405 4810 9620 49921 99842 199684 249605 499210 648973 998420 1297946 1847077 2595892 3244865 3694154 6489730 7388308 9235385 12979460 18470770 24012001 36941540 48024002 96048004 120060005 240120010 480240020