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2020606505 = 531101337383
BaseRepresentation
bin111100001110000…
…0000001000101001
312012211010110000222
41320130000020221
513114233402010
6532300335425
7101033605031
oct17034001051
95184113028
102020606505
11947641635
12484844575
13262810868
141525008c1
15bc5d3355
hex78700229

2020606505 has 32 divisors (see below), whose sum is σ = 2541846528. Its totient is φ = 1540224000.

The previous prime is 2020606481. The next prime is 2020606529. The reversal of 2020606505 is 5056060202.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2020606481) and next prime (2020606529).

It is not a de Polignac number, because 2020606505 - 210 = 2020605481 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 5275544 + ... + 5275926.

It is an arithmetic number, because the mean of its divisors is an integer number (79432704).

Almost surely, 22020606505 is an apocalyptic number.

It is an amenable number.

2020606505 is a deficient number, since it is larger than the sum of its proper divisors (521240023).

2020606505 is a wasteful number, since it uses less digits than its factorization.

2020606505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 2020606505 is about 44951.1568816643. The cubic root of 2020606505 is about 1264.2333682320.

Adding to 2020606505 its reverse (5056060202), we get a palindrome (7076666707).

The spelling of 2020606505 in words is "two billion, twenty million, six hundred six thousand, five hundred five".

Divisors: 1 5 31 101 155 337 383 505 1685 1915 3131 10447 11873 15655 34037 38683 52235 59365 129071 170185 193415 645355 1055147 1199173 4001201 5275735 5995865 13036171 20006005 65180855 404121301 2020606505