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1297028 = 22714567
BaseRepresentation
bin100111100101010000100
32102220012002
410330222010
5313001103
643444432
714011265
oct4745204
92386162
101297028
11806527
12526718
13365495
1425a96c
151a9488
hex13ca84

1297028 has 12 divisors (see below), whose sum is σ = 2302272. Its totient is φ = 639240.

The previous prime is 1297027. The next prime is 1297057. The reversal of 1297028 is 8207921.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1297027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2000 + ... + 2567.

It is an arithmetic number, because the mean of its divisors is an integer number (191856).

21297028 is an apocalyptic number.

It is an amenable number.

1297028 is a deficient number, since it is larger than the sum of its proper divisors (1005244).

1297028 is a wasteful number, since it uses less digits than its factorization.

1297028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4642 (or 4640 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 1297028 is about 1138.8713711390. The cubic root of 1297028 is about 109.0560551113.

The spelling of 1297028 in words is "one million, two hundred ninety-seven thousand, twenty-eight".

Divisors: 1 2 4 71 142 284 4567 9134 18268 324257 648514 1297028