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2172668 = 221789359
BaseRepresentation
bin1000010010011011111100
311002101100012
420102123330
51024011133
6114322352
724316211
oct10223374
94071305
102172668
1112543a3
128893b8
135b0c04
14407b08
152cdb48
hex2126fc

2172668 has 24 divisors (see below), whose sum is σ = 4082400. Its totient is φ = 1008128.

The previous prime is 2172659. The next prime is 2172673. The reversal of 2172668 is 8662712.

2172668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5873 + ... + 6231.

It is an arithmetic number, because the mean of its divisors is an integer number (170100).

22172668 is an apocalyptic number.

It is an amenable number.

2172668 is a deficient number, since it is larger than the sum of its proper divisors (1909732).

2172668 is a wasteful number, since it uses less digits than its factorization.

2172668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469 (or 467 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 2172668 is about 1473.9972862933. The cubic root of 2172668 is about 129.5182961881.

The spelling of 2172668 in words is "two million, one hundred seventy-two thousand, six hundred sixty-eight".

Divisors: 1 2 4 17 34 68 89 178 356 359 718 1436 1513 3026 6052 6103 12206 24412 31951 63902 127804 543167 1086334 2172668