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1300981 = 111011171
BaseRepresentation
bin100111101100111110101
32110002121111
410331213311
5313112411
643515021
714025643
oct4754765
92402544
101300981
118094a0
12528a71
13367216
1425c193
151aa721
hex13d9f5

1300981 has 8 divisors (see below), whose sum is σ = 1434528. Its totient is φ = 1170000.

The previous prime is 1300979. The next prime is 1300997. The reversal of 1300981 is 1890031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1300981 - 21 = 1300979 is a prime.

It is a super-2 number, since 2×13009812 = 3385103124722, which contains 22 as substring.

It is a Duffinian number.

1300981 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1300921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 526 + ... + 1696.

It is an arithmetic number, because the mean of its divisors is an integer number (179316).

21300981 is an apocalyptic number.

1300981 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1300981 is a deficient number, since it is larger than the sum of its proper divisors (133547).

1300981 is a wasteful number, since it uses less digits than its factorization.

1300981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1300981 is about 1140.6055409299. The cubic root of 1300981 is about 109.1667341323.

The spelling of 1300981 in words is "one million, three hundred thousand, nine hundred eighty-one".

Divisors: 1 11 101 1111 1171 12881 118271 1300981