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1288070 = 25718401
BaseRepresentation
bin100111010011110000110
32102102220022
410322132012
5312204240
643335142
713643210
oct4723606
92372808
101288070
117aa823
125214b2
13361394
142575b0
151a69b5
hex13a786

1288070 has 16 divisors (see below), whose sum is σ = 2649888. Its totient is φ = 441600.

The previous prime is 1288061. The next prime is 1288099. The reversal of 1288070 is 708821.

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, 9131 + ... + 9270.

It is an arithmetic number, because the mean of its divisors is an integer number (165618).

21288070 is an apocalyptic number.

1288070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1288070 is an abundant number, since it is smaller than the sum of its proper divisors (1361818).

1288070 is a wasteful number, since it uses less digits than its factorization.

1288070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18415.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 1288070 is about 1134.9317160076. The cubic root of 1288070 is about 108.8044075312.

The spelling of 1288070 in words is "one million, two hundred eighty-eight thousand, seventy".

Divisors: 1 2 5 7 10 14 35 70 18401 36802 92005 128807 184010 257614 644035 1288070