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2212189 = 71916633
BaseRepresentation
bin1000011100000101011101
311011101112221
420130011131
51031242224
6115225341
724542350
oct10340535
94141487
102212189
111281061
128a8251
135c5bb5
14418297
152da6e4
hex21c15d

2212189 has 8 divisors (see below), whose sum is σ = 2661440. Its totient is φ = 1796256.

The previous prime is 2212187. The next prime is 2212219. The reversal of 2212189 is 9812122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2212189 - 21 = 2212187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8184 + ... + 8449.

It is an arithmetic number, because the mean of its divisors is an integer number (332680).

22212189 is an apocalyptic number.

It is an amenable number.

2212189 is a deficient number, since it is larger than the sum of its proper divisors (449251).

2212189 is a wasteful number, since it uses less digits than its factorization.

2212189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16659.

The product of its digits is 576, while the sum is 25.

The square root of 2212189 is about 1487.3429328840. The cubic root of 2212189 is about 130.2988980411.

It can be divided in two parts, 2212 and 189, that added together give a 4-th power (2401 = 74).

The spelling of 2212189 in words is "two million, two hundred twelve thousand, one hundred eighty-nine".

Divisors: 1 7 19 133 16633 116431 316027 2212189