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2189019 = 37104239
BaseRepresentation
bin1000010110011011011011
311010012202210
420112123123
51030022034
6114530203
724414660
oct10263333
94105683
102189019
111265708
12896963
135b84a1
1440da67
152d38e9
hex2166db

2189019 has 8 divisors (see below), whose sum is σ = 3335680. Its totient is φ = 1250856.

The previous prime is 2189017. The next prime is 2189021. The reversal of 2189019 is 9109812.

It is an interprime number because it is at equal distance from previous prime (2189017) and next prime (2189021).

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

It is not a de Polignac number, because 2189019 - 21 = 2189017 is a prime.

It is a super-2 number, since 2×21890192 = 9583608364722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2189017) 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, 52099 + ... + 52140.

It is an arithmetic number, because the mean of its divisors is an integer number (416960).

22189019 is an apocalyptic number.

2189019 is a deficient number, since it is larger than the sum of its proper divisors (1146661).

2189019 is a wasteful number, since it uses less digits than its factorization.

2189019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104249.

The product of its (nonzero) digits is 1296, while the sum is 30.

The square root of 2189019 is about 1479.5333723847. The cubic root of 2189019 is about 129.8423928266.

The spelling of 2189019 in words is "two million, one hundred eighty-nine thousand, nineteen".

Divisors: 1 3 7 21 104239 312717 729673 2189019