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2020200520 = 235133885001
BaseRepresentation
bin111100001101001…
…1101000001001000
312012210100211010111
41320122131001020
513114132404040
6532243524104
7101030264302
oct17032350110
95183324114
102020200520
11947394608
12484689634
132626cab30
14152436972
15bc552dea
hex7869d048

2020200520 has 32 divisors (see below), whose sum is σ = 4895102520. Its totient is φ = 745920000.

The previous prime is 2020200509. The next prime is 2020200521. The reversal of 2020200520 is 250020202.

It can be written as a sum of positive squares in 4 ways, for example, as 1445064196 + 575136324 = 38014^2 + 23982^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 2020200520.

It is not an unprimeable number, because it can be changed into a prime (2020200521) 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 7 ways as a sum of consecutive naturals, for example, 1941981 + ... + 1943020.

Almost surely, 22020200520 is an apocalyptic number.

2020200520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020200520 is an abundant number, since it is smaller than the sum of its proper divisors (2874902000).

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

2020200520 is a wasteful number, since it uses less digits than its factorization.

2020200520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3885025 (or 3885021 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 2020200520 is about 44946.6408088524. The cubic root of 2020200520 is about 1264.1486916490.

Adding to 2020200520 its reverse (250020202), we get a palindrome (2270220722).

The spelling of 2020200520 in words is "two billion, twenty million, two hundred thousand, five hundred twenty".

Divisors: 1 2 4 5 8 10 13 20 26 40 52 65 104 130 260 520 3885001 7770002 15540004 19425005 31080008 38850010 50505013 77700020 101010026 155400040 202020052 252525065 404040104 505050130 1010100260 2020200520