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2130069 = 3710023
BaseRepresentation
bin1000001000000010010101
311000012220110
420020002111
51021130234
6113353233
724051054
oct10100225
94005813
102130069
111225397
12868819
135976c6
143d639b
152c11e9
hex208095

2130069 has 4 divisors (see below), whose sum is σ = 2840096. Its totient is φ = 1420044.

The previous prime is 2130061. The next prime is 2130101. The reversal of 2130069 is 9600312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2130069 - 23 = 2130061 is a prime.

It is a super-2 number, since 2×21300692 = 9074387889522, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355009 + ... + 355014.

It is an arithmetic number, because the mean of its divisors is an integer number (710024).

22130069 is an apocalyptic number.

It is an amenable number.

2130069 is a deficient number, since it is larger than the sum of its proper divisors (710027).

2130069 is an equidigital number, since it uses as much as digits as its factorization.

2130069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710026.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 2130069 is about 1459.4755907517. The cubic root of 2130069 is about 128.6662244460. Note that the first 3 decimals are identical.

The spelling of 2130069 in words is "two million, one hundred thirty thousand, sixty-nine".

Divisors: 1 3 710023 2130069