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2189007 = 32298387
BaseRepresentation
bin1000010110011011001111
311010012202100
420112123033
51030022012
6114530143
724414642
oct10263317
94105670
102189007
1112656a7
12896953
135b8492
1440da59
152d38dc
hex2166cf

2189007 has 12 divisors (see below), whose sum is σ = 3271320. Its totient is φ = 1408848.

The previous prime is 2188993. The next prime is 2189017. The reversal of 2189007 is 7009812.

It is not a de Polignac number, because 2189007 - 28 = 2188751 is a prime.

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 3933 + ... + 4454.

It is an arithmetic number, because the mean of its divisors is an integer number (272610).

22189007 is an apocalyptic number.

2189007 is a deficient number, since it is larger than the sum of its proper divisors (1082313).

2189007 is a wasteful number, since it uses less digits than its factorization.

2189007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8422 (or 8419 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 2189007 is about 1479.5293170465. The cubic root of 2189007 is about 129.8421555648.

The spelling of 2189007 in words is "two million, one hundred eighty-nine thousand, seven".

Divisors: 1 3 9 29 87 261 8387 25161 75483 243223 729669 2189007