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2130022405 = 5728693969
BaseRepresentation
bin111111011110101…
…1001000000000101
312111110000100102201
41332331121000011
513330241204110
6551205434501
7103532614600
oct17675310005
95443010381
102130022405
119a33843a5
124b540ba31
1327c3a00b4
14162c63337
15c6ee7b3a
hex7ef59005

2130022405 has 12 divisors (see below), whose sum is σ = 2973337740. Its totient is φ = 1460586624.

The previous prime is 2130022399. The next prime is 2130022409. The reversal of 2130022405 is 5042200312.

It can be written as a sum of positive squares in 2 ways, for example, as 655308801 + 1474713604 = 25599^2 + 38402^2 .

It is not a de Polignac number, because 2130022405 - 25 = 2130022373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130022409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4346740 + ... + 4347229.

It is an arithmetic number, because the mean of its divisors is an integer number (247778145).

Almost surely, 22130022405 is an apocalyptic number.

It is an amenable number.

2130022405 is a deficient number, since it is larger than the sum of its proper divisors (843315335).

2130022405 is an equidigital number, since it uses as much as digits as its factorization.

2130022405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8693988 (or 8693981 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 2130022405 is about 46152.1657671663. The cubic root of 2130022405 is about 1286.6528625313.

Adding to 2130022405 its reverse (5042200312), we get a palindrome (7172222717).

The spelling of 2130022405 in words is "two billion, one hundred thirty million, twenty-two thousand, four hundred five".

Divisors: 1 5 7 35 49 245 8693969 43469845 60857783 304288915 426004481 2130022405