Search a number
-
+
1808528088 = 233233276319
BaseRepresentation
bin110101111001011…
…1111001011011000
311200001001202010210
41223302333023120
512200440344323
6455243011120
762550143433
oct15362771330
94601052123
101808528088
11848959a14
12425809aa0
1322a8b7983
1413229681a
15a8b90293
hex6bcbf2d8

1808528088 has 32 divisors (see below), whose sum is σ = 4717900800. Its totient is φ = 576631968.

The previous prime is 1808528009. The next prime is 1808528123. The reversal of 1808528088 is 8808258081.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1637608 + ... + 1638711.

It is an arithmetic number, because the mean of its divisors is an integer number (147434400).

Almost surely, 21808528088 is an apocalyptic number.

It is an amenable number.

1808528088 is an abundant number, since it is smaller than the sum of its proper divisors (2909372712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1808528088 is a wasteful number, since it uses less digits than its factorization.

1808528088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3276351 (or 3276347 counting only the distinct ones).

The product of its (nonzero) digits is 327680, while the sum is 48.

The square root of 1808528088 is about 42526.7925900837. The cubic root of 1808528088 is about 1218.3584677246.

The spelling of 1808528088 in words is "one billion, eight hundred eight million, five hundred twenty-eight thousand, eighty-eight".

Divisors: 1 2 3 4 6 8 12 23 24 46 69 92 138 184 276 552 3276319 6552638 9828957 13105276 19657914 26210552 39315828 75355337 78631656 150710674 226066011 301421348 452132022 602842696 904264044 1808528088