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2189395 = 51322591
BaseRepresentation
bin1000010110100001010011
311010020021201
420112201103
51030030040
6114532031
724416035
oct10264123
94106251
102189395
111265a1a
12897017
135b8700
1440dc55
152d3a9a
hex216853

2189395 has 12 divisors (see below), whose sum is σ = 2846016. Its totient is φ = 1616160.

The previous prime is 2189381. The next prime is 2189399. The reversal of 2189395 is 5939812.

It is not a de Polignac number, because 2189395 - 27 = 2189267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2189399) 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, 451 + ... + 2140.

It is an arithmetic number, because the mean of its divisors is an integer number (237168).

22189395 is an apocalyptic number.

2189395 is a deficient number, since it is larger than the sum of its proper divisors (656621).

2189395 is a wasteful number, since it uses less digits than its factorization.

2189395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2622 (or 2609 counting only the distinct ones).

The product of its digits is 19440, while the sum is 37.

The square root of 2189395 is about 1479.6604340186. The cubic root of 2189395 is about 129.8498265895.

The spelling of 2189395 in words is "two million, one hundred eighty-nine thousand, three hundred ninety-five".

Divisors: 1 5 13 65 169 845 2591 12955 33683 168415 437879 2189395