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1308055 = 57219281
BaseRepresentation
bin100111111010110010111
32110110022111
410333112113
5313324210
644011451
714055400
oct4772627
92413274
101308055
11813841
12530b87
1336a4c8
142609a7
151ac88a
hex13f597

1308055 has 24 divisors (see below), whose sum is σ = 1928880. Its totient is φ = 846720.

The previous prime is 1308049. The next prime is 1308077. The reversal of 1308055 is 5508031.

It is not a de Polignac number, because 1308055 - 27 = 1307927 is a prime.

It is a super-2 number, since 2×13080552 = 3422015766050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4515 + ... + 4795.

It is an arithmetic number, because the mean of its divisors is an integer number (80370).

21308055 is an apocalyptic number.

1308055 is a deficient number, since it is larger than the sum of its proper divisors (620825).

1308055 is a wasteful number, since it uses less digits than its factorization.

1308055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319 (or 312 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1308055 is about 1143.7023214106. The cubic root of 1308055 is about 109.3642389413.

It can be divided in two parts, 13080 and 55, that multiplied together give a triangular number (719400 = T1199).

The spelling of 1308055 in words is "one million, three hundred eight thousand, fifty-five".

Divisors: 1 5 7 19 35 49 95 133 245 281 665 931 1405 1967 4655 5339 9835 13769 26695 37373 68845 186865 261611 1308055