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2020905601 = 111359923593
BaseRepresentation
bin111100001110100…
…1001001010000001
312012211200122022121
41320131021022001
513114322434401
6532311004241
7101036262031
oct17035111201
95184618277
102020905601
11947826320
12484969681
132628b6a40
1415257b8c1
15bc641ca1
hex78749281

2020905601 has 16 divisors (see below), whose sum is σ = 2378275200. Its totient is φ = 1692961920.

The previous prime is 2020905599. The next prime is 2020905613. The reversal of 2020905601 is 1065090202.

It is not a de Polignac number, because 2020905601 - 21 = 2020905599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2020905101) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 73861 + ... + 97453.

It is an arithmetic number, because the mean of its divisors is an integer number (148642200).

Almost surely, 22020905601 is an apocalyptic number.

It is an amenable number.

2020905601 is a deficient number, since it is larger than the sum of its proper divisors (357369599).

2020905601 is a wasteful number, since it uses less digits than its factorization.

2020905601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24216.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 2020905601 is about 44954.4836584739. The cubic root of 2020905601 is about 1264.2957436437.

Adding to 2020905601 its reverse (1065090202), we get a palindrome (3085995803).

The spelling of 2020905601 in words is "two billion, twenty million, nine hundred five thousand, six hundred one".

Divisors: 1 11 13 143 599 6589 7787 23593 85657 259523 306709 3373799 14132207 155454277 183718691 2020905601