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2030205405 = 35413301147
BaseRepresentation
bin111100100000010…
…0111100111011101
312020111012010020210
41321000213213131
513124213033110
6533242203033
7101211314124
oct17100474735
95214163223
102030205405
11951aa8408
12487ab3479
132647c1997
141538bcabb
15bd37c520
hex790279dd

2030205405 has 16 divisors (see below), whose sum is σ = 3327557184. Its totient is φ = 1056366720.

The previous prime is 2030205403. The next prime is 2030205431. The reversal of 2030205405 is 5045020302.

It is not a de Polignac number, because 2030205405 - 21 = 2030205403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2030205403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1649959 + ... + 1651188.

It is an arithmetic number, because the mean of its divisors is an integer number (207972324).

Almost surely, 22030205405 is an apocalyptic number.

It is an amenable number.

2030205405 is a deficient number, since it is larger than the sum of its proper divisors (1297351779).

2030205405 is a wasteful number, since it uses less digits than its factorization.

2030205405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3301196.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 2030205405 is about 45057.8007119744. The cubic root of 2030205405 is about 1266.2321219094.

Adding to 2030205405 its reverse (5045020302), we get a palindrome (7075225707).

The spelling of 2030205405 in words is "two billion, thirty million, two hundred five thousand, four hundred five".

Divisors: 1 3 5 15 41 123 205 615 3301147 9903441 16505735 49517205 135347027 406041081 676735135 2030205405