Search a number
-
+
68925760 = 265215393
BaseRepresentation
bin1000001101110…
…11100101000000
311210200210100221
410012323211000
5120121111020
610501152424
71464600511
oct406734500
9153623327
1068925760
11359a7a42
121b0bb714
1311383897
149222a08
1560b76aa
hex41bb940

68925760 has 28 divisors (see below), whose sum is σ = 164130228. Its totient is φ = 27570176.

The previous prime is 68925757. The next prime is 68925763. The reversal of 68925760 is 6752986.

It is an interprime number because it is at equal distance from previous prime (68925757) and next prime (68925763).

It can be written as a sum of positive squares in 2 ways, for example, as 51151104 + 17774656 = 7152^2 + 4216^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68925763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107377 + ... + 108016.

Almost surely, 268925760 is an apocalyptic number.

It is an amenable number.

68925760 is an abundant number, since it is smaller than the sum of its proper divisors (95204468).

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

68925760 is a wasteful number, since it uses less digits than its factorization.

68925760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215410 (or 215400 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 68925760 is about 8302.1539373828. The cubic root of 68925760 is about 410.0094386088.

The spelling of 68925760 in words is "sixty-eight million, nine hundred twenty-five thousand, seven hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 160 320 215393 430786 861572 1076965 1723144 2153930 3446288 4307860 6892576 8615720 13785152 17231440 34462880 68925760