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2213129 = 2396223
BaseRepresentation
bin1000011100010100001001
311011102211202
420130110021
51031310004
6115233545
724545162
oct10342411
94142752
102213129
111281836
128a88b5
135c6459
14418769
152dab1e
hex21c509

2213129 has 4 divisors (see below), whose sum is σ = 2309376. Its totient is φ = 2116884.

The previous prime is 2213093. The next prime is 2213137. The reversal of 2213129 is 9213122.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9213122 = 24606561.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2213129 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2213129.

It is not an unprimeable number, because it can be changed into a prime (2218129) 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, 48089 + ... + 48134.

It is an arithmetic number, because the mean of its divisors is an integer number (577344).

22213129 is an apocalyptic number.

It is an amenable number.

2213129 is a deficient number, since it is larger than the sum of its proper divisors (96247).

2213129 is an equidigital number, since it uses as much as digits as its factorization.

2213129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96246.

The product of its digits is 216, while the sum is 20.

The square root of 2213129 is about 1487.6588990760. The cubic root of 2213129 is about 130.3173508978.

The spelling of 2213129 in words is "two million, two hundred thirteen thousand, one hundred twenty-nine".

Divisors: 1 23 96223 2213129