Search a number
-
+
68748630 = 2352778273
BaseRepresentation
bin1000001100100…
…00010101010110
311210100210101120
410012100111112
5120044424010
610453304410
71463232216
oct406202526
9153323346
1068748630
1135896955
121b035106
1311321082
1491b8246
15607ee70
hex4190556

68748630 has 32 divisors (see below), whose sum is σ = 165612384. Its totient is φ = 18264576.

The previous prime is 68748613. The next prime is 68748671. The reversal of 68748630 is 3684786.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4174 + ... + 12446.

It is an arithmetic number, because the mean of its divisors is an integer number (5175387).

Almost surely, 268748630 is an apocalyptic number.

68748630 is an abundant number, since it is smaller than the sum of its proper divisors (96863754).

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

68748630 is a wasteful number, since it uses less digits than its factorization.

68748630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8560.

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 68748630 is about 8291.4793613685. The cubic root of 68748630 is about 409.6579141425.

It can be divided in two parts, 68748 and 630, that added together give a triangular number (69378 = T372).

The spelling of 68748630 in words is "sixty-eight million, seven hundred forty-eight thousand, six hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 277 554 831 1385 1662 2770 4155 8273 8310 16546 24819 41365 49638 82730 124095 248190 2291621 4583242 6874863 11458105 13749726 22916210 34374315 68748630