Search a number
-
+
1380648807 = 34236112149
BaseRepresentation
bin101001001001011…
…0000011101100111
310120012221020010000
41102102300131213
510311421230212
6345000032343
746133215116
oct12222603547
93505836100
101380648807
1164938197a
123264626b3
13190064775
14d1515c7d
15813211dc
hex524b0767

1380648807 has 40 divisors (see below), whose sum is σ = 2187583200. Its totient is φ = 865909440.

The previous prime is 1380648799. The next prime is 1380648811. The reversal of 1380648807 is 7088460831.

It is not a de Polignac number, because 1380648807 - 23 = 1380648799 is a prime.

It is a super-2 number, since 2×13806488072 = 3812382256541046498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380648307) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 107569 + ... + 119717.

It is an arithmetic number, because the mean of its divisors is an integer number (54689580).

Almost surely, 21380648807 is an apocalyptic number.

1380648807 is a deficient number, since it is larger than the sum of its proper divisors (806934393).

1380648807 is a wasteful number, since it uses less digits than its factorization.

1380648807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12245 (or 12236 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 1380648807 is about 37157.0828645092. The cubic root of 1380648807 is about 1113.5107325353.

The spelling of 1380648807 in words is "one billion, three hundred eighty million, six hundred forty-eight thousand, eight hundred seven".

Divisors: 1 3 9 23 27 61 69 81 183 207 549 621 1403 1647 1863 4209 4941 12149 12627 36447 37881 109341 113643 279427 328023 741089 838281 984069 2223267 2514843 6669801 7544529 17045047 20009403 22633587 51135141 60028209 153405423 460216269 1380648807