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1080702081 = 34232983241
BaseRepresentation
bin100000001101010…
…0011010010000001
32210022112100120000
41000122203102001
54203124431311
6255123110213
735531546634
oct10032432201
92708470500
101080702081
11505034518
12261b12369
13142b84cb4
14a3757c1b
1564d23056
hex406a3481

1080702081 has 80 divisors (see below), whose sum is σ = 1770975360. Its totient is φ = 654635520.

The previous prime is 1080702071. The next prime is 1080702089. The reversal of 1080702081 is 1802070801.

It is not a de Polignac number, because 1080702081 - 215 = 1080669313 is a prime.

It is a super-2 number, since 2×10807020812 = 2335833975755461122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1080702089) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4484121 + ... + 4484361.

It is an arithmetic number, because the mean of its divisors is an integer number (22137192).

Almost surely, 21080702081 is an apocalyptic number.

It is an amenable number.

1080702081 is a deficient number, since it is larger than the sum of its proper divisors (690273279).

1080702081 is a wasteful number, since it uses less digits than its factorization.

1080702081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388 (or 379 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 1080702081 is about 32874.0335371247. The cubic root of 1080702081 is about 1026.2078423707.

Adding to 1080702081 its reverse (1802070801), we get a palindrome (2882772882).

The spelling of 1080702081 in words is "one billion, eighty million, seven hundred two thousand, eighty-one".

Divisors: 1 3 9 23 27 29 69 81 83 87 207 241 249 261 621 667 723 747 783 1863 1909 2001 2169 2241 2349 2407 5543 5727 6003 6507 6723 6989 7221 16629 17181 18009 19521 20003 20967 21663 49887 51543 54027 55361 60009 62901 64989 149661 154629 160747 166083 180027 188703 194967 448983 460069 482241 498249 540081 566109 580087 1380207 1446723 1494747 1620243 1740261 4140621 4340169 4484241 5220783 12421863 13020507 13342001 15662349 37265589 40026003 46987047 120078009 360234027 1080702081